Diemnsions of Ordinary bolts.pdf
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Dimensions for Detailing 475 Bolt size M12 M16 M20 M24 Outside dia 24 30 37 44 Thickness 2.5 3 3 4 Mass of 1000 washers (kg) 6 11 17 31 Outside dia 28 34 39 50 Thickness 2.5 3 3 4 Mass of 1000 washers (kg) 9 16 19 45 Outside dia 36 48 60 72 Thickness 3 4 5 6 Mass of 1000 washers (kg) 21 49 97 170 NOTE: Tolerance on nominal thickness (and therefore on mass) may be as much as 30%. Table H.58 DIMENSIONS OF ORDINARY BOLT ASSEMBLIES (All dimensions in millimetres) ISO Black Hexagonal Bolts (BS 4190:2001) [10] M12 M16 M20 M24 s 19.00 24.00 30.00 36.00 d 12.70 16.70 20.84 24.84 e 21.90 27.70 34.60 41.60 k 8.45 10.45 13.90 15.90 r 1.25 1.25 1.78 1.78 M12 M16 M20 M24 d 12.70 16.70 20.84 24.84 D (sharp) 24.00 32.00 40.00 48.00 D (min) 20.40 27.20 34.00 40.80 r 1.00 1.00 1.00 1.50 90 o Countersunk Round Bolts (BS 4933:1973) [52] ISO Metric Black Hexagonal Nuts (BS 4190:2001) [10] Black Washers (BS 4320:1968) [40] Nominal Bolt Length Thread Length Up to/including 125mm 2d + 6mm Over 125mm up to/including 200 2d + 12mm Over 200mm 2d + 25mm Short Thread Lengths Up to/including 125mm 1.5d Thread Lengths (BS 4190:2001 [10] , BS 4933:1973 [52] ) Large (Form F) Normal (Form E) Extra Large (Form G) See Thread Length Table r Grade 8.8 Head 8.8 M M e e s s 30 d Length k Grade 4.6 Head o m m 30 30 o o 30 30 o o t e s Thin nut 30 o Normal thickness nuts r 90 D D d Length o See Thread Length Table M M12 M16 M20 M24 s 19.00 24.00 30.00 36.00 e 21.90 27.70 34.60 41.60 m 10.00 13.00 16.00 19.00 t 7.00 9.00 9.00 10.00 Fully threaded bolts are recommended as the industry standard, see Section 2.2. Joints in Steel Construction: Simple Connections - H.58 Dimensions of Ordinary bolt assemblies Discuss me ... Created on 20 May 2008 This material is copyright - all rights reserved. Use of this document is subject to the terms and conditions of the Steelbiz Licence Agreement
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Transcript of Diemnsions of Ordinary bolts.pdf
Dimensions for Detailing
475
Bolt size M12 M16 M20 M24
Outside dia 24 30 37 44Thickness 2.5 3 3 4
Mass of 1000washers (kg) 6 11 17 31
Outside dia 28 34 39 50Thickness 2.5 3 3 4
Mass of 1000washers (kg) 9 16 19 45
Outside dia 36 48 60 72Thickness 3 4 5 6
Mass of 1000washers (kg) 21 49 97 170
NOTE: Tolerance on nominal thickness(and therefore on mass)may be as much as 30%.
Table H.58
DIMENSIONS OF ORDINARY BOLT ASSEMBLIES
(All dimensions in millimetres)
ISO Black Hexagonal Bolts(BS 4190:2001)[10]
M12 M16 M20 M24
s 19.00 24.00 30.00 36.00
d 12.70 16.70 20.84 24.84
e 21.90 27.70 34.60 41.60
k 8.45 10.45 13.90 15.90
r 1.25 1.25 1.78 1.78
M12 M16 M20 M24
d 12.70 16.70 20.84 24.84
D (sharp) 24.00 32.00 40.00 48.00
D (min) 20.40 27.20 34.00 40.80
r 1.00 1.00 1.00 1.50
90o Countersunk Round Bolts(BS 4933:1973)[52]
ISO Metric Black Hexagonal Nuts(BS 4190:2001)[10]
Black Washers(BS 4320:1968)[40]
Nominal Bolt Length Thread Length
Up to/including 125mm 2d + 6mm
Over 125mm up to/including 200 2d + 12mm
Over 200mm 2d + 25mm
Short Thread Lengths
Up to/including 125mm 1.5d
Thread Lengths(BS 4190:2001[10], BS 4933:1973[52])
La
rge
(Fo
rm F
)N
orm
al
(Fo
rm E
)E
xtra
La
rge
(Fo
rm G
)
See Thread Length Table
r
Grade 8.8 Head
8.8
M M
e e
s s
30
d
Lengthk
Grade 4.6 Head
o
mm
3030o o
3030o o
t
e
s
Thin nut
30o
Normal thickness nuts
r
90 D D d
Length
o
See Thread Length Table
M
M12 M16 M20 M24
s 19.00 24.00 30.00 36.00
e 21.90 27.70 34.60 41.60
m 10.00 13.00 16.00 19.00
t 7.00 9.00 9.00 10.00
Fully threaded bolts are recommended as the industry standard, see Section 2.2.
Joints in Steel Construction: Simple Connections - H.58 Dimensions of Ordinary bolt assemblies
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