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Page 1: Specification for: HELMETS CEREMONIAL, HOUSEHOLD CAVALRY 4918... · HELMETS, CEREMONIAL, HOUSEHOLD CAVALRY. Defence Clothing. PROPERTY OF MINISTRY OF DEFENCE. Page 1 of 52. UK/SC/4918

UK/SC/4918 Issue 08 23 July 2018

Technical Specification for

HELMETS, CEREMONIAL, HOUSEHOLD CAVALRY

Defence Clothing

PROPERTY OF MINISTRY OF DEFENCE

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PREFACE

TABLE 1 – PRODUCT LIST

Item Name HELMET, CEREMONIAL, HOUSEHOLD CAVALRY AND COMPONENTS

TL Number NATO Stock No. 8415-99- Description Pattern No.

TL1037963 135-7912 SOCKET SIDE ROSETTE, Household Cavalry 21278

TL1038056 173-0976 ROSETTE, Life Guards, Officers D01512

TL1038058 188-5565 HELMET CEREMONIAL, Household Cavalry, Other Ranks, Size - 52 cm D01501

TL1038059 188-5566 HELMET CEREMONIAL, Household Cavalry, Other Ranks, Size - 53 cm D01501

TL1038060 188-5567 HELMET CEREMONIAL, Household Cavalry, Other Ranks, Size - 54 cm D01501

TL1038061 188-5568 HELMET CEREMONIAL, Household Cavalry, Other Ranks, Size - 55 cm D01501

TL1038062 188-5569 HELMET CEREMONIAL, Household Cavalry, Other Ranks, Size - 56 cm D01501

TL1038063 188-5570 HELMET CEREMONIAL, Household Cavalry, Other Ranks, Size - 57 cm D01501

TL1038064 188-5571 HELMET CEREMONIAL, Household Cavalry, Other Ranks, Size - 58 cm D01501

TL1038065 188-5572 HELMET CEREMONIAL, Household Cavalry, Other Ranks, Size - 59 cm D01501

TL1038066 188-5573 HELMET CEREMONIAL, Household Cavalry, Other Ranks, Size - Outsize D01501

TL1038067 188-5574 LINER, Household Cavalry, All Ranks, Size - 52 cm D01502

TL1038068 188-5575 LINER, Household Cavalry, All Ranks, Size - 53 cm D01502

TL1038069 188-5576 LINER, Household Cavalry, All Ranks, Size - 54 cm D01502

TL1038070 188-5577 LINER, Household Cavalry, All Ranks, Size - 55 cm D01502

TL1038071 188-5578 LINER, Household Cavalry, All Ranks, Size - 56 cm D01502

TL1038072 188-5579 LINER, Household Cavalry, All Ranks, Size - 57 cm D01502

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TABLE 1 – PRODUCT LIST (Continued)

TL Number NATO Stock No. 8415-99- Description Pattern No.

TL1038073 188-5580 LINER, Household Cavalry, All Ranks, Size - 58 cm D01502

TL1038074 188-5581 LINER, Household Cavalry, All Ranks, Size - 59 cm D01502

TL1038075 188-5582 LINER, Household Cavalry, All Ranks, Size - Outsize D01502

TL1038076 188-5583 SPIKE & BALL, Household Cavalry, Other Ranks D01503

TL1038142 226-0498 SPIKE & BALL, Household Cavalry, Officers D01888

TL1039910 975-4381 FRONT PLATE, Household Cavalry, Other Ranks 16607

TL1039911 975-4441 HELMET CEREMONIAL, Household Cavalry, Officers, Size - 56 cm 4297A

TL1039912 975-4442 HELMET CEREMONIAL, Household Cavalry, Officers, Size - 57 cm 4297A

TL1039913 975-4443 HELMET CEREMONIAL, Household Cavalry, Officers, Size - 58 cm 4297A

TL1039914 975-4444 HELMET CEREMONIAL, Household Cavalry, Officers, Size - 59 cm 4297A

TL1039915 975-4448 HELMET CEREMONIAL, Household Cavalry, Officers, Size - Outsize 4297A

TL1039916 975-4451 FRONT PLATE, Household Cavalry, Officers 21350

TL1039917 975-4486 BACK BEADING, Household Cavalry, Other Ranks 23757

TL1039919 975-4488 ROSETTE, Household Cavalry, Other Ranks 21279

TL1039971 978-6494 ROSETTE, The Blues and Royals, Officers 23666

TL1039973 978-6496 BACK BEADING, Household Cavalry, Officers 23668

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TABLE 1 – PRODUCT LIST (Continued)

TL Number NATO Stock No. 8415-99- Description Pattern No.

TL1050657 985-9870 STRAP, CHIN, The Blues and Royals, Officers, Size - Small 23902

TL1050658 985-9871 STRAP, CHIN, The Blues and Royals, Officers, Size - Medium 23902

TL1050659 985-9872 STRAP, CHIN, The Blues and Royals, Officers, Size - Large 23902

TL1050660 985-9873 STRAP, CHIN, Life Guards, Officers, Size - Small 23667

TL1050661 985-9874 STRAP, CHIN, Life Guards, Officers, Size - Medium 23667

TL1050662 985-9875 STRAP, CHIN, Life Guards, Officers, Size - Large 23667

TL1050663 985-9876 STRAP, CHIN, Household Cavalry, Other Ranks, Size - Small 22269

TL1050664 985-9877 STRAP, CHIN, Household Cavalry, Other Ranks, Size - Medium 22269

TL1050665 985-9878 STRAP, CHIN, Household Cavalry, Other Ranks, Size - Large 22269

Any colour shown in this document is for representation and must not be used for colour matching.

IPR STATEMENT

This specification contains information which is proprietary to the Secretary of State for Defence and shall remain the property of the Secretary of State. It is issued in strict confidence and must not be seen by any unauthorised person. The specification is supplied solely for the purpose of Information/Tender/Contract and shall not be copied or reproduced or used for any other purpose whatsoever without the express prior written permission of the Secretary of State as represented by the Intellectual property rights group.

Technical documents in this specification refer to the edition current at the date of tender or contract unless otherwise stated.

CROWN COPYRIGHT RESERVED

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TABLE 2 – ISSUE RECORD

Issue No Comments Issue Date 8 • Addition of TL numbers to Table 1

• Obsolete NSN’s 8415-99-135-7913 and 8415-99-978-6497 deleted – Edge beading material and manufacturing details transfered to respective helmet data sheets

• NSN’s 8415-99-188-5565 to 5573 – Added dimensions for spike fitting holes in helmet shell

• NSN 8465-99-188-5583 – Orientation of image for “Base view” corrected.

• NSN 8415-99-226-0498 – Finish of star corrected in Bill of Materials

• NSN’s 8415-99-975-4441 to 4444 and 8415-99-975-4448 – Added dimensions and corrected positioning of spike fitting holes in helmet shell

• NSN’s 8415-99-173-0976, 8415-99-975-4488 and 8415-99-978-6494 – Height of rosettes and length of screw threads corrected

• NSN’s 8415-99-985-9873 to 9875 – Corrected dimension of link “E” to 21mm

23 July 2018

7 Rewrite of specification adding details of component parts and accessories along with associated NSN’s

23 March 2017

6 Technical Review and reformatted. 02 July 2009

5 Technical change, incorporating new head liners and turrets and new NSN’s for Soldiers pattern New head liners for WO’s/ Officer pattern.

27 November 2008

4 Addition of Photo for Pattern 4298A 29 March 2004

3 Reformatted with partial technical change. 08 January 2004

2 Reformatted without technical change. 03 October 1990

1 New issue. 28 June 1988

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PART 1

1. THE PRODUCT

a. Use of the Product: Two helmets with similar shells, embellished for wear by either Officers and WO's or Other Ranks of the Household Cavalry for Ceremonial duties.

Figure 1 - Warrant Officer & Officers pattern

Figure 2 - Other Ranks pattern

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TABLE 3 – RELATED SPECIFICATIONS AND DOCUMENTS

Specification/Document Detail BS EN 1652 Copper and copper alloys. Plate, sheet, strip and circles for general

purposes

BS EN 10270 Part 1

Steel wire for mechanical springs. Patented cold drawn unalloyed spring steel wire

BS EN 12590 Textiles industrial sewing threads made wholly or partly from synthetic fibres

BS 3870 Parts 1 & 2 Stitches and seams

BS 4290 Method for specifying Electroplated coatings of silver and silver alloys for decorative and protective purposes

BS 4292 Part 2 Method for specifying electroplated coatings of gold and gold alloys for decorative and protective purposes

UK/SC/5607 Leathers, chrome and chrome tanned, soft dressed

UK/SC/5697 Leather, sheep, basil

2. PATTERNS

a. Master Patterns: DC holds a Master Pattern for this product. Potential contractors may view the pattern on site by arrangement with the DC Commercial Department.

b. Standard Patterns: A Standard Pattern may be obtained from the DC Technical Information Office and may be used to provide the criteria for all materials, components and manufacturing features not fully defined in this specification.

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PART 2

3. PRODUCT DESIGN

a. Product Description: The design and shape of the helmets are to be strictly in accordance with that of the Standard Pattern. The helmets are to be supplied complete with turret, spike, front plate, rosettes and chin strap.

TABLE 4 – PRODUCT COMPONENTS

4.1 Gilding metal • To meet the requirements of BS EN 1652-CW501L

4.2 Nickel silver • To meet the requirements of BS EN 1652-CW409J

4.3 Gilding metal • To meet the requirements of BS EN 1652-CW505L

4.4 Sterling silver • To contain a minimum of 92.5% silver and hallmarked in accordance with the 1973 The Hallmarking Act

4.5 Acid free tissue paper

• Tissue paper shall be a fully bleached, acid and sulpher free, lightweight unglazed tissue paper, free from foreign matter and defects

4.6 Other components

• Other components are specified in the data sheets • Other components not specified above or in the data sheets must be as in

the Standard Patterns or an alternative approved by DC with similar performance characteristics

TABLE 5 – PRODUCT CONSTRUCTION

5.1 Design and assembly of all items

• The design, assembly, textures and shades of all items are to be strictly in accordance with that of the guiding standard pattern, except those caused through the effects of natural wear and tear and ageing

5.2 Nickel Plating • Items to have a bright finish are to have a 1.25 µm thick nickel plated base coat

5.3 Silver Plating • All items that have an electroplated coating of silver or silver alloy are to conform to BS 4290 – Cu/Ag 10

5.4 Gold Plating • All items that have an electroplated coating of gold or gold alloy are to conform to BS 4292 Part 2 Cu/Au (91.7) 5

5.3 Material thickness

• The thickness of the material used is to be as defined in the data sheets

TABLE 6 – PERFORMANCE REQUIREMENTS OF FINISHED ITEMS

6.1 Visual requirements of finished items

• The items are to be compared against the appropriate Standard Pattern for mechanical imperfections and any streakiness or unequal colouring

• They are to be viewed, under no magnification, at a distance of between 30cm to 40cm in daylight or in a daylight colour-matching booth

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4. PACKAGING AND LABELLING

a. Packaging and package labelling shall be as detailed in the contract conditions. b. Items shall be packaged in a way to prevent damage during transit and storage. c. All items are to be first wrapped in acid free tissue paper and then individually

wrapped and sealed in a clear polythene bag. d. Helmets are to have a printed self adhesive label (see Table 7) attached to the inside

of the helmet clearly visible through the head lining. Labels are to clearly show: Item Description, NSN, Contract Number, Size, year of manufacture and broad arrow

e. Under no circumstances should the contractor’s name, logo or trademark appear on the items or packaging.

TABLE 7 – SPECIMEN LABEL

HELMET CEREMONIAL Household Cavalry, Other Ranks 8415-99-188-5565 DC/01234 Size 52cm 2016

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TABLE 8 – DIMENSIONAL TOLERANCES

The following tolerances apply unless otherwise specified within the data sheets or drawings. Where items are to be fitted together the plus and minus tolerances may need to be adjusted to allow for correct fitting.

In millimetres (unless otherwise stated)

From To +/- tolerance for metal ware

0.001 9 2%

10 49 0.5

50 149 1

150 299 2

300 699 5

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PART 3

5. DATA SHEETS

a. The following section contains data sheets listing bill of materials, manufacturing information, dimensions and images for each belt, sling etc. NSN listed in Table 1.

b. Relevant Standard Patterns are to be used to govern shade, all shades depicted on data sheets are for guidance only.

c. All measurements are in millimetres unless otherwise stated.

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NSN 8455-99-135-7912 Pattern No. 21278

Description Socket, Rosette, Helmet, Ceremonial

User Household Cavalry, All Ranks

All measurements in mm. Refer to Table 8 for tolerances

BILL OF MATERIALS

Main Material • Gilding metal

MANUFACTURING INFORMATION

Tube • Threaded through its length, screw thread to match Standard Pattern • The threaded tube is to be hard soldered to the oval base

General • Design is to be as the Standard Pattern • All burrs and sharp edges are to be removed

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NSN 8415-99-173-0976 Pattern No. D01512

Description Rosette, Helmet, Ceremonial

User Lifeguards, Officers and WOs

All measurements in mm. Refer to Table 8 for tolerances

BILL OF MATERIALS

Main Material • Gilding metal, dead gold plated and burnished to comply with the requirements of BS 4292 Part 2

MANUFACTURING INFORMATION Stud • Threaded along length, screw thread to match Standard Pattern

• Hard soldered centrally to underside of rosette

General • Design is to be as the Standard Pattern • All burrs and sharp edges are to be removed

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NSN 8415-99-188-5565 to 5573 Pattern No. D01501

Description Helmet, Ceremonial

User Household Cavalry Other Ranks

DETAIL

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CONTINUATION OF 8415-99-188-5565 to 5573

DETAIL INNER

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CONTINUATION OF 8415-99-188-5565 to 5573

BILL OF MATERIALS

Shell and Peak • Nickel silver sheet, 0.5mm thick

Liner • See NATO Stock No. 8415-99-188-5574 to 188-5582 for details

Edge Beading • Gilding metal, 0.5mm thick, self-finish, polished

Front Plate • See NATO Stock No. 8415-99-975-4381 for details

Back Beading • See NATO Stock No. 8415-99-975-4486 for details

Side Leaves • Gilding metal, self-finish

Rosette • See NATO Stock No. 8415-99-975-4488 for details

Socket Rosette • See NATO Stock No. 8455-99-135-7912 for details

Spike assembly

• See NATO Stock No. 8465-99-188-5583 for details

Peak Lining • Sheepskin skiver, green to match Standard Pattern, or an alternative approved by DC

Rivets, nuts and washers

• Brass as on Standard Pattern

PRODUCT CONSTRUCTION

Shell • The helmet shell is to be made in two parts joined by securely hard soldering at the centre-back and front. The join shall not be visible when the back beading, front plate and spike are attached

• The construction of the shell includes the insertion of holes for the attachment of the various components as per the appropriate standard pattern

• The shape is to be a good match to the Standard Pattern and graded to fit relavent sized liner

Peak • The peak is to be attached at the brow of the helmet using six smoothly finished 3mm diameter brass rivets, positioned as on the standard pattern. Neither the joint or rivets shall be visible once the front plate and side leaves are attached

• The peak when measured from the inside edge of the shell to the edge at the centre of the peak is to be 57mm deep

Back beading • See NATO Stock No. 8415-99-975-4486 for construction details • The back beading is to be secured through the back join by an M3 brass nut

with ø15mm washer and a pair of fixing prongs. The fixing prongs should not be folded over until the liner is in place

• The stud is to be parted off flush to the top of the nut

Side Leaves • Design is to be as the Standard Pattern • The side leaves shall be secured at the side of the helmet so as not to be

visible when rosettes are in place using a ø2mm brass rivet, this shall be smoothly finished

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CONTINUATION OF 8415-99-188-5565 to 5573

PRODUCT CONSTRUCTION continued

Edge beading • !4mm wide gilding metal strip folded in half longditudinally to 6.5mm wide • The edge beading is to be smooth and without folds or creases and is to be

securely hard soldered along the edge of the helmet shell with the joins in line with the rosette sockets so as to not be visible when the chin strap is attached

• At the rear of the helmet the edge beading is to be smoothly fitted over the back beading

• The beading shall be secured at the joins using a ø2mm brass rivet, this shall be smoothly finished

Spike • See NATO Stock No. 8465-99-188-5583 for construction details • The spike assembly shall be positioned such that the longer points of the base

star are oriented to face the front and back of the helmet as on the Standard Pattern

• The base shall be securely attached to the shell by four M3 brass nuts with ø15mm washers and is to be secured by the ventilation plate on the inside of the helmet.

• The studs are to be parted off flush to the top of the nuts

Front Plate • See NATO Stock No. 8415-99-975-4381 for construction details • The front plate is to be positioned in accordance with the Standard Pattern • It is to be secured to the shell by three M3 brass nuts and ø15mm washers and

four pairs of fixing prongs. The upper central prong should not be folded over until the liner is in place

• The studs are to be parted off flush to the top of the nuts • The edges of the front plate shall be a good fit to the helmet shell and any gaps

no greater than 0.5mm. The front plate shall be secure and free of movement

Liner • See NATO Stock No. 8415-99-188-5574 to 8415-99-188-5582 for construction details

• The liner shall be fitted into the shell with the seam to the rear and the base of the liner level with the base of the helmet at the side.

• The headband shall be secured front and rear using the central prongs which shall pass through the leather headband and folded over flat

• The liner must not be visible below the edge of the helmet

Socket Rosette • See NATO Stock No. 8455-99-135-7912 for construction details • The sockets shall be securely attached to the sides of the helmet through the

sides of the leather headband using two ø3mm brass rivets and washers. The rivets shall be smoothly finished

Rosette • See NATO Stock No. 8415-99-975-4488 for construction details • The helmet shall be supplied complete with two rosettes • The rosettes shall be screwed into place with a piece of card between the

rosette and helmet to ensure that no scratching occurs during transit and storage

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CONTINUATION OF 8415-99-188-5565 to 5573

PRODUCT CONSTRUCTION continued

General • The rivets, nuts and washers are to be firmly and securely seated • Design is to be as the standard pattern • All burrs and sharp edges are to be removed

Schedule of NATO Stock Numbers

NATO Stock Number Size and internal circumference NATO Stock Number Size and internal

circumference 8415-99-188-5565 52 cm 8415-99-188-5570 57 cm

8415-99-188-5566 53 cm 8415-99-188-5571 58 cm

8415-99-188-5567 54 cm 8415-99-188-5572 59 cm

8415-99-188-5568 55 cm

8415-99-188-5569 56 cm

8415-99-188-5573 Outsize As detailed on order

Measurements

Depth from back to centre of crown 295

Depth from centre of crown to front edge 220 Shell

Depth of sides from centre of crown 195

Measurements of Helmet

Peak Depth from front edge to point 60

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NSN 8415-99-188-5574 to 5582 Pattern No. D01502

Description Liner, Helmet, Ceremonial

User Household Cavalry All Ranks

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CONTINUATION OF 8415-99-188-5574 to 5582

BILL OF MATERIALS

Headband • Leather, vegetable tanned bovine, natural finish, 2 to 2.5mm thick

Restraining straps

• Leather, vegetable tanned bovine, natural finish, 1.3 to 1.4mm thick

Padding • Single-ply 6mm thick polyester mesh lining Standard Pattern MAT0026A

Head lining • Leather, Hair, Sheep. Chrome/gluteraldehyde combination tanned cap sheepskin, pearl colour, thickness 0.7 – 0.9mm, Type C to UK/SC/5607.

Draw cord • Cord, textile, cotton, white, 4mm

Eyelets • Brass 4mm

Buckle • Brass, nickel plated

Sewing thread • Thread, polyester and cotton, CF polyester core, cotton sheath, to BS EN 12590, colour to match the Standard Pattern For brachering Metric Ticket No.25. For all other sewing Metric Ticket No.75

• The shade is to match that of the Standard Pattern

PRODUCT CONSTRUCTION

Headband • The band is to be formed by a 75mm wide length of leather. The band is to be shaped to fit the shell and is to be securely joined at the centre back, with the ends abutted and sewn using seam type 4.01.01 of BS 3870

Restraining straps

• Restraining straps are to be inserted formed by three strips of leather securely sewn to the bottom edge of the headband

• The back strap, 210mm long, 32mm wide, is to be positioned centrally at the back. Two slits, 45mm long, 10mm in from end and sides are to be inserted at the free end. The slits are to finish with 2mm diameter holes

• The left strap, to finish 120mm long, 25mm wide, is to be positioned centrally at the side. The end of the strap is to be turned back 20mm and be securely sewn enclosing the buckle

• The right strap, 270mm long, 25mm wide, with the free end pointed, is to be positioned centrally at the side. Ten pairs of holes are to be punched centrally in the strap, the first at 60mm from the pointed end then spaced 12mm apart, centre to centre

Padding • 6mm thick single ply polyester mesh with sewn tape seams, held between the leather headband and the leather head lining.

Head lining • The lining is to be cut in two pieces and joined at the sides, shaped to fit the head leather, attached using seam type 4.01.01 of BS 3870

• Each lining is to be cut to the shape of that on the appropriate standard pattern, with four extended tongues, each of which are to have an eyelet inserted at the free end

• The holes, punched for receiving eyelets, are not to exceed the diameter of the eyelet being inserted

• A 65cm long draw cord shall be threaded through the eyelets and loosly tied off at the end

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CONTINUATION OF 8415-99-188-5574 to 5582

PRODUCT CONSTRUCTION continued

Brachering • The padding and head lining shall be securely brachered to the leather headband as in the standard pattern

• The brachering on is to be stitch type 204 of BS 3870

General • Sewing threads may be treated with stain free lubricant. • All seams are to be free from pucker • The stitching on the inside of the liner shall be free from ends and knots

Schedule of NATO Stock Numbers

NATO Stock Number Size and internal circumference NATO Stock Number Size and internal

circumference 8415-99-188-5574 52 cm 8415-99-188-5579 57 cm

8415-99-188-5575 53 cm 8415-99-188-5580 58 cm

8415-99-188-5576 54 cm 8415-99-188-5581 59 cm

8415-99-188-5577 55 cm

8415-99-188-5578 56 cm

8415-99-188-5582 Outsize As detailed on order

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UK/SC/4918 Issue 08 23 July 2018

NSN 8465-99-188-5583 Pattern No. D01503

Description Spike, Helmet, Ceremonial

User Household Cavalry, Other Ranks

DETAIL

All measurements in mm. Refer to Table 8 for tolerances

Page 22 of 52

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UK/SC/4918 Issue 08 23 July 2018

CONTINUATION OF 8465-99-188-5583

DETAIL

All measurements in mm. Refer to Table 8 for tolerances

Page 23 of 52

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UK/SC/4918 Issue 08 23 July 2018

CONTINUATION OF 8415-99-188-5583

DETAIL Spring Retainer

BILL OF MATERIALS

Spike, ball and vent

• Nickel silver

Liner for spike plume

• Gilding metal 4.5mm inner square tube

Star • Gilding metal

Spring and spring retainer

• Spring, steel wire BS EN 10270 Part 1/SM (Z) • Spring retainer, brass • Ball bearings, steel Size 6mm as in the standard pattern

Ventilation plate

• Nickel silver, 1.3mm thick

Nuts, studs and washers

• Brass as on Standard Pattern

Page 24 of 52

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UK/SC/4918 Issue 08 23 July 2018

Page 25 of 52

CONTINUATION OF 8465-99-188-5583

PRODUCT CONSTRUCTION

Spike • Spike, four sided, with 4.5mm square opening at the top, lined with a 4.5mm gilding metal tube

• When fully assembled the square tube shall sit inside the spring retainer • Design as per Standard Pattern

Ball • Hollow ball, to be smoothly finished with no visible join line • Design as per Standard Pattern

Vent • Incorporating six ø5mm ventilation holes • Design as per Standard Pattern

Star • The star is to include four M3 x 15mm studs hard soldered to the underside which pass through the helmet shell and attach the spike assembly to the ventilation plate inside the shell

• Design as per Standard Pattern

Spike assembly

• The spike, ball, vent and star shall be hard soldered together as on the Standard Pattern

• The star shall be alligned so that the edge of the spike lines up with the long points of the star

• All joins shall be clean and free from excess solder. There shall be no solder visible on external surfaces of the assembly

Spring and spring retainer

• Spring retainer as drawing in detail above • Spring, 65mm long, 6mm wide as in the Standard Pattern • Four 6mm ball bearings inserted into the spring retainer and held in tension by

the spring. In use the spring retainer is secured centrally to the ventilation plate by hard soldering

• The spring and spring retainer is to receive a click-in, click-out plume stem, as Standard Pattern. Standard Pattern No D01504 can be used to guide for fit

Ventilation plate

• A disk of nickel silver with a central sloping recess which contains the spring retainer. Incorporating four oval ventilation holes and four holes for the attachment screws

General • The assembly shall be supplied with a polished finish • All burrs and sharp edges are to be removed • The design and detail is to be a good match to the Standard Pattern • Alternative methods of construction may be considered by Defence Clothing

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UK/SC/4918 Issue 08 23 July 2018

NSN 8415-99-226-0498 Pattern No. D01888 to guide, see Pattern No D01503 for construction

Description Spike, Helmet, Ceremonial

User Household Cavalry Officers and Warrant Officers

DETAIL

All measurements in mm. Refer to Table 8 for tolerances

Page 26 of 52

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UK/SC/4918 Issue 08 23 July 2018

CONTINUATION OF 8415-99-226-0498

DETAIL

All measurements in mm. Refer to Table 8 for tolerances

Page 27 of 52

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UK/SC/4918 Issue 08 23 July 2018

CONTINUATION OF 8415-99-226-0498

DETAIL

Spring Retainer

BILL OF MATERIALS

Spike • Nickel silver, bright silver plated to comply with the requirements of BS 4290

Liner for spike plume

• Gilding metal 4.5mm inner square tube

Ball • Gilding metal, bright gold plated to comply with the requirements of BS 4292 Part 2

Star • Gilding metal, dead gold plated and burnished to comply with the requirements of BS 4292 Part 2

Disk • Corrosion resistant steel, 0.5mm thick

Spring and Spring retainer

• Spring, steel wire BS EN 10270 Part 1 /SM (Z) • Spring retainer, brass • Ball bearings, steel Size 6mm as in the standard pattern

Page 28 of 52

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Page 29 of 52

CONTINUATION OF 8415-99-226-0498

BILL OF MATERIALS

Ventilation plate

• Nickel silver, 1.3mm thick

Nuts, studs and washers

• Brass as on Standard Pattern

PRODUCT CONSTRUCTION

Spike • Spike, four sided, with 4.5mm square opening at the top, lined with a 4.5mm gilding metal tube

• The stem is threaded at the base to secure to the spring retainer • Incorporating a key post to fit the slots in the ball and star shaped base • Design as per Standard Pattern

Ball • Hollow ball, to be smoothly finished with no visible join line • The base of the ball is to have a ø10mm hole with key slot • Design as per Standard Pattern

Vent • Incorporating six ø5mm ventilation holes • Design as per Standard Pattern

Ball and Vent assembly

• The ball and vent shall be hard soldered together prior to gold plating as on the Standard Pattern

• When assembled the key slot on ball shall be aligned so that it lies midway between two adjacent holes on vent

• All joins shall be clean and free from excess solder. There shall be no solder visible on external surfaces of the assembly

Star • The star is to include four M3 x 15mm studs hard soldered to the underside which pass through the helmet shell and attach the spike assembly to the ventilation plate inside the shell

• Incorporating 12, ø3mm ventilation holes and a central ø10mm hole with key slot

• Design as per Standard Pattern

Spring and spring retainer

• Spring retainer as drawing in detail above • Spring, 65mm long, 6mm wide as in the Standard Pattern • Four 6mm ball bearings inserted into the spring retainer and held in tension by

the spring. In use the spring retainer is secured centrally to the ventilation plate by hard soldering

• The spring and spring retainer is to receive a click-in, click-out plume stem, as Standard Pattern. Standard Pattern No D01504 can be used to guide for fit

Ventilation plate

• A disk of nickel silver with a central sloping recess which contains the spring retainer. Incorporating four ventilation holes and four holes for the attachment screws

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Page 30 of 52

CONTINUATION OF 8415-99-226-0498

PRODUCT CONSTRUCTION continued

General • The star shall be alligned so that the edge of the spike line up with the long points of the star

• The assembly shall be securly fastened together with no loose compomnents • The assembly shall be supplied with a bright gold and silver plated finish for the

spike with a dead gold plated and burnished finish for the star • All burrs and sharp edges are to be removed • The design and detail is to be a good match to the Standard Pattern • Alternative methods of construction may be considered by Defence Clothing

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UK/SC/4918 Issue 08 23 July 2018

NSN 8415-99-975-4381 Pattern No. 16607

Description Front Plate, Helmet, Ceremonial

User Household Cavalry, Other Ranks

DETAIL

All measurements in mm. Refer to Table 8 for tolerances

Page 31 of 52

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UK/SC/4918 Issue 08 23 July 2018

CONTINUATION OF 8415-99-975-4381

DETAIL - BADGE

All measurements in mm. Refer to Table 8 for tolerances

BILL OF MATERIALS

Plate • Gilding metal

Star • Nickel silver

Garter • Gilding metal

Nuts, washers, studs and prongs

• Brass as on Standard Pattern

Page 32 of 52

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UK/SC/4918 Issue 08 23 July 2018

Page 33 of 52

CONTINUATION OF 8415-99-975-4381

PRODUCT CONSTRUCTION

Plate • The plate shall have a bright polished finish. The design and detail is to be a good match to the Standard Pattern

• The plate is to have four ø3mm holes inserted to comply with the wire prongs on the garter, plus three additional ø8mm holes positioned to the top and sides of the star and garter

• The plate inner is to have three M3 x15mm studs, and four pairs of 6.5mm wide by 1mm thick by 22mm long prongs for attachment to the helmet hard soldered as on the Standard Pattern

• The plate is is supplied semi formed to the helmet shape, to be curved as the Standard Pattern

Star • The star shall have a bright polished finish. The design and detail is to be a good match to the Standard Pattern

• The star is to have four ø3mm holes positioned to match with the wire prongs on the garter

• The star is to be curved as the Standard Pattern to comply with the curvature of the plate

Garter • The garter shall have a bright polished finish. The design and detail is to be a good match to the Standard Pattern

• The garter inner has four 15mm long ø1.5mm brass wire prongs hard soldered and positioned such that they pass through the star and the plate inner

Assembly • The star and garter are positioned centrally on the plate. • The wire prongs on the garter are passed through the star and plate and turned

back and hard soldered to the reverse of the plate. The assembly is further secured by hard soldering the star to the plate through the ø8mm holes

• The components are to be positioned as per the standard pattern. The edges of the star and garter shall be a good fit to the plate and any gaps no greater than 0.5mm. The assembly shall be secure and free of movement

• Each stud shall come assembled with a brass 9mm AF nut and ø15mm washer

General • Design is to be as the Standard Pattern • All burrs and sharp edges are to be removed

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UK/SC/4918 Issue 08 23 July 2018

NSN 8415-99-975-4441 to 4444 and 8415-99-975-4448

Pattern No. 4297A

Description Helmet, Ceremonial

User Household Cavalry Officers and Warrant Officer

DETAIL

Page 34 of 52

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UK/SC/4918 Issue 08 23 July 2018

CONTINUATION OF 8415-99-975-4441 to 4444 and 8415-99-975-4448

DETAIL INNER

Page 35 of 52

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Page 36 of 52

CONTINUATION OF 8415-99-975-4441 to 4444 and 8415-99-975-4448

BILL OF MATERIALS

Shell and Peak • Nickel silver, 0.5mm thick, bright silver plated, to comply with the requirements of BS 4290

Liner • See NATO Stock No. 8415-99-188-5578 to 188-5582 for details

Edge Beading • Gilding metal, 0.5mm thick, bright gold plated to comply with the requirements of BS 4292 Part 2

Front Plate • See NATO Stock No. 8415-99-975-4451 for details

Back Beading • See NATO Stock No. 8415-99-978-6496 for details

Side Leaves • Gilding metal, dead gold plated and burnished to comply with the requirements of BS 4292 Part 2

Socket Rosette • See NATO Stock No. 8455-99-135-7912 for details

Spike assembly

• See NATO Stock No. 8415-99-226-0498 for details

Peak and Tail Lining

• Sheepskin skiver, green to match Standard Pattern, or an alternative approved by DC

Rivets, nuts and washers

• Brass as on standard Pattern

PRODUCT CONSTRUCTION

Shell • The helmet shell is to be made in two parts joined by securely hard soldering at the centre-back and front. The join shall not be visible when the back beading, front plate and spike are attached

• The construction of the shell includes the insertion of holes for the attachment of the various components as per the appropriate standard pattern

• The shape is to be a good match to the Standard Pattern and graded to fit relavent sized liner

Peak • The peak is to be attached at the brow of the helmet using six smoothly finished 3mm diameter brass rivets, positioned as on the standard pattern. Neither the joint or rivets shall be visible once the front plate and side leaves are attached

• The peak when measured from the inside edge of the shell to the edge at the centre of the peak is to be 57mm deep

Back Beading • See NATO Stock No. 8415-99-978-6496 for construction details • The back beading is to be secured through the back join by an M3 brass nut

with ø15mm washer and a pair of fixing prongs. The fixing prongs should not be folded over until the liner is in place

• The stud is to be parted off flush to the top of the nut

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Page 37 of 52

CONTINUATION OF 8415-99-975-4441 to 4444 and 8415-99-975-4448

PRODUCT CONSTRUCTION continued

Side Leaves • Design is to be as the Standard Pattern • The side leaves shall be secured at the side of the helmet so as not to be visible

when rosettes are in place using a ø2mm brass rivet, this shall be smoothly finished

Edge Beading • 14mm wide gilding metal strip folded in half longditudinally to 6.5mm wide • The edge beading is to be smooth and without folds or creases and is to be

securely hard soldered along the edge of the helmet shell with the joins in line with the rosette sockets so as to not be visible when the chin strap is attached

• At the rear of the helmet the edge beading is to be smoothly fitted over the back beading

• The beading shall be secured at the joins using a ø2mm brass rivet, this shall be smoothly finished

Spike • See NATO Stock No. 8415-99-226-0498 for construction details • The spike assembly shall be positioned such that the longer points of the base

star are oriented to face the front and back of the helmet as on the Standard Pattern

• The base shall be securely attached to the shell by four M3 brass nuts with ø15mm washers and is to be secured by the ventilation plate on the inside of the helmet

• The studs are to be parted off flush to the top of the nuts

Front Plate • See NATO Stock No. 8415-99-975-4451 for construction details • The front plate is to be positioned in accordance with the Standard Pattern • It is to be secured to the shell by three M3 brass nuts and ø15mm washers and

four pairs of fixing prongs. The central prongs should not be folded over until the liner is in place

• The studs are to be parted off flush to the top of the nuts • The edges of the front plate shall be a good fit to the helmet shell and any gaps

no greater than 0.5mm. The front plate shall be secure and free of movement

Liner • See NATO Stock No. 8415-99-188-5577 to 8415-99-188-5582 for construction details

• The liner shall be fitted into the shell with the seam to the rear and the base of the liner level with the base of the helmet at the side.

• The headband shall be secured front and rear using the central prongs which shall pass through the leather headband and folded over flat

• The liner must not be visible below the edge of the helmet

Socket Rosette • See NATO Stock No. 8455-99-135-7912 for construction details • The sockets shall be securely attached to the sides of the helmet through the

sides of the leather headband using two ø3mm brass rivets and washers. The rivets shall be smoothly finished

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Page 38 of 52

CONTINUATION OF 8415-99-975-4441 to 4444 and 8415-99-975-4448

PRODUCT CONSTRUCTION continued

General • The rivets, nuts and washers are to be firmly and securely seated • Design is to be as the standard pattern • All burrs and sharp edges are to be removed

Schedule of NATO Stock Numbers

NATO Stock Number Size and internal circumference NATO Stock Number Size and internal

circumference 8415-99-975-4441 56 cm 8415-99-975-4444 59 cm

8415-99-975-4442 57 cm 8415-99-975-4448 Outsize As detailed on order

8415-99-975-4443 58 cm

Measurements and Tolerances

Depth from back to centre of crown 295

Depth from centre of crown to front edge 220 Shell

Depth of sides from centre of crown 195

Measurements of Helmet

Peak Depth from front edge to point 60

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UK/SC/4918 Issue 08 23 July 2018

NSN 8415-99-975-4451 Pattern No. 21350 To Guide, see Pattern No 16607 for rear fittings

Description Front Plate, Helmet, Ceremonial

User Household Cavalry Officers and Warrant Officers

DETAIL

All measurements in mm. Refer to Table 8 for tolerances

Page 39 of 52

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UK/SC/4918 Issue 08 23 July 2018

CONTINUATION OF 8415-99-975-4451

DETAIL

All measurements in mm. Refer to Table 8 for tolerances

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Page 41 of 52

CONTINUATION OF 8415-99-975-4451

BILL OF MATERIALS Plate • Gilding metal, dead gold plated and burnished to comply with the requirements

of BS 4292 Part 2

Star • Stirling silver, dead silver finish

Garter insert • Stirling silver, dead silver finish, with red and blue vitreous enamel

Garter outer • Gilding metal, dead gold plated and burnished to comply with the requirements of BS 4292 Part 2

Fixing pin • Steel wire

Nuts, washers, studs and prongs

• Brass as on Standard Pattern

PRODUCT CONSTRUCTION

Plate • The design and detail is to be a good match to the Standard Pattern • The plate is to have four slots inserted to comply with the lugs on the star and

the garter • The plate inner is to have three M3 x15mm studs, and four pairs 6.5mm wide by

1mm thick by 22mm long prongs for attachment to the helmet hard soldered as on the Standard Pattern No 16607

• The plate is is supplied semi formed to the helmet shape, to be curved as the Standard Pattern

Star • The star shall have diamond cut facets. The design and detail is to be a good match to the Standard Pattern

• The star has two fixing lugs which pass through to the plate inner • The star has two holes positioned to match the attachment lugs of the garter

outer • The star is to be curved as the Standard Pattern to comply with the curvature of

the plate

Garter insert • The design and detail is to be a good match to the Standard Pattern • The silver background is to have fine horizontal lines in the central cross area

and diagonal lines on the quarters • The insert has two cutaways on the side to locate on the mounting lugs of the

garter outer • The garter background is enamelled in blue, the central St. George’s cross is

enamelled in red as per the Standard Pattern

Garter outer • The garter outer shall be fully pierced • The outline of the St. George’s cross shall line up with the design on the garter

insert • The garter outer has two fixing lugs which pass through the star to the plate

inner

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Page 42 of 52

CONTINUATION OF 8415-99-975-4451 PRODUCT CONSTRUCTION continued

Fixing pin • The pin is formed from steel wire. One end is pointed, the other flat

Assembly • The star and garter are positioned centrally on the plate • The garter outer, inner and star are positioned and the lugs passed through the

plate. The fixing pin is threaded through the holes in the lugs of the star and garter

• The components are to be positioned as per the standard pattern. The edges of the star and garter shall be a good fit to the plate and any gaps no greater than 0.5mm. The assembly shall be secure and free of movement

• Each stud shall come assembled with a brass 9mm AF nut and ø15mm washer

General • Design is to be as the Standard Pattern • All burrs and sharp edges are to be removed

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UK/SC/4918 Issue 08 23 July 2018

NSN 8415-99-975-4486 Pattern No. 23757

Description Back Beading, Helmet, Ceremonial

User Household Cavalry, Other Ranks

All measurements in mm. Refer to Table 8 for tolerances

BILL OF MATERIALS

Main Material • Gilding metal, self-finish

Nuts, washers, studs and prongs

• Brass as on Standard Pattern

MANUFACTURING INFORMATION

Beading • Design is to be as the Standard Pattern • The beading is to incorporate one M3 x 15mm fixing studs with brass nut and

ø15mm brass washer, and one pair of 6.5mm wide by 1mm thick by 22mm deep prongs

• The beading is supplied semi formed to the helmet shape • All burrs and sharp edges are to be removed

Page 43 of 52

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UK/SC/4918 Issue 08 23 July 2018

NSN 8415-99-975-4488 Pattern No. 21279

Description Rosette, Helmet, Ceremonial

User Household Cavalry, Other Ranks

All measurements in mm. Refer to Table 8 for tolerances

BILL OF MATERIALS

Main Material • Gilding metal, self-finish

MANUFACTURING INFORMATION

Stud • Threaded along length, screw thread to match Standard Pattern • Hard soldered centrally to underside of rosette

General • Design is to be as the Standard Pattern • All burrs and sharp edges are to be removed

Page 44 of 52

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UK/SC/4918 Issue 08 23 July 2018

NSN 8415-99-978-6494 Pattern No. 23666

Description Rosette, Helmet, Ceremonial

User Blues and Royals, Officers and WOs

All measurements in mm. Refer to Table 8 for tolerances

BILL OF MATERIALS

Main Material • Gilding metal, dead gold plated and burnished to comply with the requirements of BS 4292 Part 2

MANUFACTURING INFORMATION

Stud • Threaded along length, screw thread to match Standard Pattern • Hard soldered centrally to underside of rosette

General • Design is to be as the Standard Pattern • All burrs and sharp edges are to be removed

Page 45 of 52

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UK/SC/4918 Issue 08 23 July 2018

NSN 8415-99-978-6496 Pattern No. 23668

Description Back Beading, Helmet, Ceremonial

User Household Cavalry, Officers and WOs

All measurements in mm. Refer to Table 8 for tolerances

BILL OF MATERIALS

Main Material • Gilding metal, dead gold plated and burnished to comply with the requirements of BS 4292 Part 2

Nuts, washers, studs and prongs

• Brass as on Standard Pattern

MANUFACTURING INFORMATION

Beading • Design is to be as the Standard Pattern • The beading is to incorporate one M3 x 15mm fixing studs with brass nut and

ø15mm brass washer, and one pair of 6.5mm wide by 1mm thick by 22mm deep prongs

• The beading is supplied semi formed to the helmet shape • All burrs and sharp edges are to be removed

Page 46 of 52

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UK/SC/4918 Issue 08 23 July 2018

NSN 8415-99-985-9870 to 9872 Pattern No. 23902

Description Strap, Chin, Helmet, Ceremonial

User The Blues and Royals Officers and WOs

DETAIL

All measurements in mm. Refer to Table 8 for tolerances

BILL OF MATERIALS Chain links • Gilding metal, 1mm thick, bright gold plated to comply with the requirements of

BS 4292 Part 2

Leather • Basil, to UK/SC/5697 strained, dyed through, finished black and long grain morocco embossed, thickness 1.5mm, as on the Standard Pattern or an approved alternative

Sewing Thread • Thread, polyester and cotton, CF polyester core, cotton sheath, to BS EN 12590, colour to match the standard pattern

Page 47 of 52

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Page 48 of 52

CONTINUATION OF 8415-99-985-9870 to 9872

MANUFACTURING INFORMATION

Chain • Links are to be hard soldered and curbed in three sizes as the photo diagram and Standard Pattern

• Soldered joints are not to be visible on completed chain, joints shall be positioned under the adjoining link

Strap assembly

• The strap is to be formed by linked rings securely sewn onto a length of leather, cut to fit the width of the rings

• The strap is to be lined with a second black leather backing strip glued to the first

• the raw edges are to be oversewn together as on the standard patterns • Two, 4mm diameter holes are to be inserted centrally onto each end of the

strap, spaced as per the diagram. The holes are to fall within the first two chain links at each end of the strap

General • Design is to be as the Standard Pattern • All burrs and sharp edges are to be removed

DIMENSIONS

Quantity of Links Overall Length Nato Stock No Size

A B C D 8415-99-985-9870 Small 8 4 18 410mm

8415-99-985-9871 Medium 9 5 19 460mm

8415-99-985-9872 Large 10 6 20 510mm

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UK/SC/4918 Issue 08 23 July 2018

NSN 8415-99-985-9873 to 9875 Pattern No. 23667

Description Strap, Chin, Helmet, Ceremonial

User The Lifeguards Officers and WOs

DETAIL

All measurements in mm. Refer to Table 8 for tolerances

BILL OF MATERIALS Chain links • Gilding metal, 1mm thick, bright gold plated to comply with the requirements of

BS 4292 Part 2

Leather • Basil, to UK/SC/5697 strained, dyed through, finished black and long grain morocco embossed, thickness 1.5mm, as on the Standard Pattern or an approved alternative

Sewing Thread • Thread, polyester and cotton, CF polyester core, cotton sheath, to BS EN 12590, colour to match the standard pattern

Page 49 of 52

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UK/SC/4918 Issue 08 23 July 2018

Page 50 of 52

CONTINUATION OF 8415-99-985-9873 to 9875

MANUFACTURING INFORMATION

Chain • Links are to be hard soldered and curbed in seven sizes as the photo diagram and Standard Pattern.

• A single solid oval link 2mm thick at centre is to be positioned at each end of the chain

• Soldered joints are not to be visible on completed chain, joints shall be positioned under the adjoining link

Strap assembly

• The strap is to be formed by linked rings securely sewn onto a length of leather, cut to fit the width of the rings

• The strap is to be lined with a second black leather backing strip glued to the first

• the raw edges are to be oversewn together as on the standard patterns • Two, 4mm diameter holes are to be inserted centrally onto each end of the

strap, spaced as per the diagram. The holes are to fall within the first two chain links at each end of the strap

General • Design is to be as the Standard Pattern • All burrs and sharp edges are to be removed

DIMENSIONS

Quantity of Links Overall Length Nato Stock No Size

A B C D E F G H 8415-99-985-9873 Small 1 4 4 8 3 3 6 410mm

8415-99-985-9874 Medium 1 5 4 8 4 4 6 460mm

8415-99-985-9875 Large 1 6 4 8 5 5 6 510mm

Page 51: Specification for: HELMETS CEREMONIAL, HOUSEHOLD CAVALRY 4918... · HELMETS, CEREMONIAL, HOUSEHOLD CAVALRY. Defence Clothing. PROPERTY OF MINISTRY OF DEFENCE. Page 1 of 52. UK/SC/4918

UK/SC/4918 Issue 08 23 July 2018

NSN 8415-99-985-9876 to 9878

Pattern No. 22269

Description Strap, Chin, Helmet, Ceremonial

User Household Cavalry, Other Ranks

DETAIL

All measurements in mm. Refer to Table 8 for tolerances

BILL OF MATERIALS

Chain links • Gilding metal, 1mm thick, polished natural finish

Leather • Basil, to UK/SC/5697 strained, dyed through, finished black and long grain morocco embossed, thickness 1.5mm, as on the Standard Pattern or an approved alternative

Sewing Thread • Thread, polyester and cotton, CF polyester core, cotton sheath, to BS EN 12590, colour to match the standard pattern

Page 51 of 52

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UK/SC/4918 Issue 08 23 July 2018

Page 52 of 52

CONTINUATION OF 8415-99-985-9876 to 9878

MANUFACTURING INFORMATION

Chain • Links are to be hard soldered and curbed in three sizes as the photo diagram and Standard Pattern.

• Soldered joints are not to be visible on completed chain, joints shall be positioned under the adjoining link

Strap assembly

• The strap is to be formed by linked rings securely sewn onto a length of leather, cut to fit the width of the rings

• The strap is to be lined with a second black leather backing strip glued to the first

• the raw edges are to be oversewn together as on the standard patterns • Two, 4mm diameter holes are to be inserted centrally onto each end of the

strap, spaced as per the diagram. The holes are to fall within the first two chain links at each end of the strap

General • Design is to be as the Standard Pattern • All burrs and sharp edges are to be removed

DIMENSIONS

Quantity of Links Overall Length Nato Stock No Size

A B C D 8415-99-985-9876 Small 8 4 18 410mm

8415-99-985-9877 Medium 9 5 19 460mm

8415-99-985-9878 Large 10 6 20 510mm