ASME Y14.3-2012 Orthographic and Pictorial Views

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Orthographicand Pictorial

ViewsEngineering Drawing and RelatedDocumentation Practices

A N A M E R I C A N N A T I O N A L S T A N D A R D

ASME Y14.3-2012[Revision of ASME Y14.3-2003 (R2008)

and Consolidation of ASME Y14.4M-1989 (R2009)]



ASME Y14.3

ADOPTION NOTICE

ASME Y14.3, “Orthographic and Pictorial Views,” was adopted on 28 January 2013 for use by the Department of Defense (DoD). Proposedchanges by DoD activities must be submitted to the DoD Adopting Activity: Commander,U. S. A RDEC, ATTN RDA R- QES- E, P icat inny Arsenal , NJ 07806 -50 00 o r ema il ed [email protected]. Copies of this document may be purchased from TheAmerican Society of Mechanical Engineers, Two Park Avenue, New York, New York, United States, 10016.http://www.asme.org.

Custodians: Adopting Activity:Army — AR Army — ARNavy — SA (Project DRPR-2013-006)Air Force — 16

DLA — DH

Review Activities:Army — AV, CR, MI, PT, TE, TMNavy — AS, CG, CH, MC, NPAir Force — 04, 13, 99DLA — ISOSD — SEOther — CM, MP, DC2, NS

NOTE: The activities listed above were interested in this document as of the dateof this document. Since organizations and responsibilities can change, you should

verify the currency of the information above using the ASSIST Online databaseat https://assist.dla.mil.

AREA DRPR



ASME Y14.3-2012

Orthographicand Pictorial

Views

Engineering Drawing and RelatedDocumentation Practices

A N A M E R I C A N N A T I O N A L S T A N D A R D

[Revision of ASME Y14.3-2003 (R2008)

Two Park Avenue • New York, NY • 10016 USA

and Consolidation of ASME Y14.4M-1989 (R2009)]



Date of Issuance: August 30, 2013

This Standard will be revised when the Society approves the issuance of a new edition. There will be no written inter-pretations of the requirements of this Standard issued to this edition.

Periodically certain actions of the ASME Y14 Committee may be published as Cases. Cases are published on theASME Web site under the Committee Pages at http://cstools.asme.org/ as they are published.

Errata to codes and standards may be posted on the ASME Web site under the Committee Pages to provide correc-tions to incorrectly published items, or to correct typographical or grammatical errors in codes and standards. Sucherrata shall be used on the date posted.

The Committee Pages can be found at http://cstools.asme.org/. There is an option available to automatically receivean e-mail notification when errata are posted to a particular code or standard. This option can be found on the appro-priate Committee Page after selecting “Errata” in the “Publication Information” section.

ASME is the registered trademark of The American Society of Mechanical Engineers.

This code or standard was developed under procedures accredited as meeting the criteria for American National Standards. TheStandards Committee that approved the code or standard was balanced to assure that individuals from competent and concerned interestshave had an opportunity to participate. The proposed code or standard was made available for public review and comment that providesan opportunity for additional public input from industry, academia, regulatory agencies, and the public-at-large.

ASME does not “approve,” “rate,” or “endorse” any item, construction, proprietary device, or activity.ASME does not take any position with respect to the validity of any patent rights asserted in connection with any items mentioned in this

document, and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable letters patent,nor assumes any such liability. Users of a code or standard are expressly advised that determination of the validity of any such patent rights,and the risk of infringement of such rights, is entirely their own responsibility.

Participation by federal agency representative(s) or person(s) affiliated with industry is not to be interpreted as government or industryendorsement of this code or standard.

No part of this document may be reproduced in any form,

in an electronic retrieval system or otherwise,without the prior written permission of the publisher.

The American Society of Mechanical Engineers

Two Park Avenue, New York, NY 10016-5990

Copyright © 2013 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERS

All rights reservedPrinted in U.S.A.



iii

CONTENTS

Foreword .............................................................................................................................................................................. vi

Committee Roster ................................................................................................................................................................ vii

Correspondence With the Y14 Committee ...................................................................................................................... viii

1 General ............................................................................................................................................................... 1

2 References ......................................................................................................................................................... 2

3 Terms and Definitions ...................................................................................................................................... 3

4 Pictorial View Creation ..................................................................................................................................... 3

5 Orthographic View Creation ............................................................................................................................. 13

6 Principal Orthographic Views .......................................................................................................................... 20

7 Drawings With Orthographic Views ................................................................................................................ 24

8 Section Views in Orthographic Projection ...................................................................................................... 309 Saved Views ...................................................................................................................................................... 41

10 Conventional Representation .......................................................................................................................... 51

11 Exploded Pictorial Assembly Views ................................................................................................................ 65

12 Pictorial Views as Illustrations ........................................................................................................................ 66

Figures4-1 Kinds of Projection .......................................................................................................................................... 64-2 Isometric Projection ......................................................................................................................................... 74-3 Dimetric Projection .......................................................................................................................................... 74-4 Trimetric Projection ......................................................................................................................................... 84-5 Choice of Axonometric View ......................................................................................................................... 8

4-6 Oblique Projection ........................................................................................................................................... 94-7 Oblique Projections and Effect of Foreshortening ...................................................................................... 104-8 One-Point Perspective ..................................................................................................................................... 104-9 Two-Point Perspective .................................................................................................................................... 114-10 Three-Point Perspective .................................................................................................................................. 114-11 Location of Point of Sight in Perspective ..................................................................................................... 124-12 Pictorial View Coordinate System ................................................................................................................. 125-1 Orthographic Projections to Form Orthographic Views ............................................................................ 145-2 Space and Orthographic Arrangement of Views (Third-Angle Projection) ............................................ 155-3 Space and Orthographic Arrangement of Views (First-Angle Projection) .............................................. 165-4 Third-Angle Projection Standard Arrangement of the Six Principal Orthographic Views .................. 175-5 First-Angle Projection Standard Arrangement of the Six Principal Orthographic Views .................... 175-6 Arrow Method — Principal Views ................................................................................................................ 18

5-7 Arrow Proportions .......................................................................................................................................... 185-8 Projection Symbol ............................................................................................................................................ 196-1 Removed View ................................................................................................................................................. 216-2 Arrow Method — Removed View ................................................................................................................ 216-3 Rotated View .................................................................................................................................................... 226-4 Arrow Method — Rotated View ................................................................................................................... 226-5 Rotation Arrow ................................................................................................................................................ 226-6 Removed View When Multiple Drawing Graphic Sheets Are Used ....................................................... 23



iv

7-1 Drawings With One View ............................................................................................................................... 257-2 Drawings With Two Views ............ ............ ............ ............ ............ ............ ............ ............ ............ ............ ..... 257-3 Drawing With Three Orthographic Views ................................................................................................... 267-4 Drawing With Three Orthographic Views of a Stamping ......................................................................... 267-5 Front View and Partial Auxiliary Views....................................................................................................... 277-6 Partial Auxiliary View ..................................................................................................................................... 277-7 Partial Auxiliary, Partial Front, and Right-Side Views ............................................................................... 287-8 Partial Primary and Secondary Auxiliary Views ........................................................................................ 287-9 Detail ................................................................................................................................................................. 297-10 Phantom Lines for Related Parts ................................................................................................................... 298-1 Section Lining ................................................................................................................................................... 328-2 Zone Referencing for Removed Sections ..................................................................................................... 328-3 Full Section, Cutting Plane Omitted ............................................................................................................. 338-4 Half Section, Cutting Plane Omitted ............................................................................................................ 338-5 Identifying Sections ......................................................................................................................................... 348-6 Arrow Method — Identifying Sections ........................................................................................................ 358-7 Bent and Offset Cutting Planes...................................................................................................................... 358-8 Full Section ....................................................................................................................................................... 368-9 Half Section, Assembly ................................................................................................................................... 368-10 Omission of Visible Lines ............................................................................................................................... 37

8-11 Omission of Hidden Lines ............................................................................................................................. 378-12 Constructed Offset Section View ................................................................................................................... 388-13 Aligned Section ................................................................................................................................................ 388-14 Removed Section ............................................................................................................................................. 398-15 Removed Sections on Center Lines ............................................................................................................... 398-16 Revolved Sections ............................................................................................................................................ 408-17 Broken-Out Sections ........................................................................................................................................ 408-18 Auxiliary Sections ............................................................................................................................................ 409-1 Model................................................................................................................................................................. 439-2 Model and Drawing Graphic Sheet .............................................................................................................. 449-3 Design Model With Offset Section ................................................................................................................ 459-4 Design Model Cutting Plane .......................................................................................................................... 469-5 Design Model With Cutting-Plane Intersection Lines Shown .................................................................. 47

9-6 Axonometric Views, Coordinate System Shown, Section View Rotated................................................. 489-7 Drawing Graphic Sheet, Cutting-Plane Intersection Lines Shown .......................................................... 499-8 Section View in the Same Orientation as the View Containing the Cutting Plane ................................ 5010-1 Line Precedence ............................................................................................................................................... 5210-2 Use of Hidden Lines in Pictorial ................................................................................................................... 5310-3 Rotated Features to Show True Shape .......................................................................................................... 5310-4 Small Intersections ........................................................................................................................................... 5410-5 Large Intersections .......................................................................................................................................... 5410-6 Conventional Representation, Filleted and Rounded Corners ................................................................. 5510-7 Conventional Representations, Fillets, Rounds, and Runouts .................................................................. 5510-8 Fillets and Rounds ........................................................................................................................................... 5610-9 Conventional Representation, Breaks in Elongated Features ................................................................... 5710-10 Break Lines ....................................................................................................................................................... 5810-11 Section Through Ribs ...................................................................................................................................... 5810-12 Conventional Representation of Ribs ........................................................................................................... 5910-13 True Geometry Through Ribs ........................................................................................................................ 5910-14 Section Across Ribs .......................................................................................................................................... 6010-15 Section Views and Section Lining ................................................................................................................. 6010-16 Section Through Assembly ............................................................................................................................ 6110-17 Section Through Shafts, Keys, Bolts, Nuts, and Like Items....................................................................... 6110-18 Spokes in Section ............................................................................................................................................. 6210-19 Rotated Features .............................................................................................................................................. 62



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10-20 Conventional Representation of Rotated Features ..................................................................................... 6310-21 Intersections in Section ................................................................................................................................... 6310-22 Intersections...................................................................................................................................................... 6411-1 Comparison of Standard Section With Exploded Assembly ..................................................................... 65

Nonmandatory AppendicesA Space Geometry ............................................................................................................................................... 67

B Space Analysis and Applications .................................................................................................................. 72C Illustrations ....................................................................................................................................................... 78

Index ............................................................................................................................................................................ 83

ASME Y14.3-2012 Orthographic and Pictorial Views

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