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Click Specification

(Non-preferred) dimensions in parentheses.

Unit:mm

High Strength Structural Bolts

IS 3757 - 1985

Display drawing:

印标IS 3757 - 1985 IS3757 3757IS High Strength Structural Bolts
Thread Size
d
M16 M20 (M22) M24 (M27) M30 M36
P Pitch
b ref. For length / Nom ≤100
For length / Nom ＞100
c max
min
da max
da max
da min
dw min
e min
k Nominal Size
max
min
k1 min
r min
s max
min
z max
2 2.5 2.5 3 3 3.5 4
31 36 38 41 44 49 56
38 43 45 48 51 56 63
0.8 0.8 0.8 0.8 0.8 0.8 0.8
0.4 0.4 0.4 0.4 0.4 0.4 0.4
18.7 23.24 25.24 27.64 31.24 34.24 41
16.7 20.84 22.84 24.84 27.84 30.84 37
15.3 19.16 21.16 23.16 26.16 29.16 35
24.9 31.4 33.3 38 42.8 46.5 55.9
29.56 37.29 39.55 45.2 50.85 55.37 66.44
10 12.5 14 15 17 18.7 22.5
10.75 13.4 14.9 15.9 17.9 19.75 23.55
9.25 11.6 13.1 14.1 16.1 17.65 21.45
6.5 8.1 9.2 9.9 11.3 12.4 15
0.6 0.8 0.8 1 1.2 1.2 1.5
27 34 36 41 46 50 60
26.16 33 35 40 45 49 58.8
3 3.8 3.8 4.5 4.5 5.3 6
①,dw，max = Sactual
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