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Click Specification

(Non-preferred) dimensions in parentheses.

Round head bolts with short square neck

JIS B 1171 (Attached Table 2) - 1996

Display drawing:

日标JIS B1171 (Attached Table 2) - 1996 JI Round head bolts with short square neck
Screw Thread
d
M6 M8 M10 M12 M16 M20
P Pitch
b L≤125
125<L≤200
c max
min
dk max
ds max
e min
k1 max
min
k max
min
s max
min
1 1.25 1.5 1.75 2 2.5
18 22 26 30 38 46
/ 28 32 36 44 52
1.9 2.2 2.5 2.8 3.6 4.2
1.1 1.2 1.5 1.8 2.4 3
14.2 18 22.3 26.6 35 43
6 8 10 12 16 20
7.64 10.2 12.8 15.37 20.57 25.73
3 3 4 4 5 5
2.4 2.4 3.2 3.2 4.2 4.2
3.6 4.8 5.8 6.8 8.9 10.9
3 4 5 6 8 10
6.48 8.58 10.58 12.7 16.7 20.84
5.88 7.85 9.85 11.82 15.82 19.79

Alternative history