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Small hexagon head bolts, finished

JIS B 1180 (AT2.1) - 1994

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日标JIS B1180 (AT2.1) - 1994 JIS1180 1180J Small hexagon head bolts, finished
Screw Thread
d
M8 M10 M12 (M14) M16 (M18) M20 (M22) M24 (M27) M30 (M33) M36 (M39)
P Pitch coarse thread
Fine thread
ds max
min
k Nominal Size
max
min
s max
min
e
D
r min
da max
z
c
1.25 1.5 1.75 2 2 2.5 2.5 2.5 3 3 3.5 3.5 4 4
1 1.25 1.25 1.5 1.5 1.5 1.5 1.5 2 2 2 2 3 3
8 10 12 14 16 18 20 22 24 27 30 33 36 39
7.85 9.85 11.8 13.8 15.8 17.8 19.8 21.8 23.8 26.8 29.8 32.75 35.75 38.75
5.5 7 8 9 10 12 13 14 15 17 19 21 23 25
5.65 7.15 8.2 9.2 10.2 12.2 13.2 14.2 15.2 17.2 19.25 21.25 23.25 25.25
5.35 6.85 7.8 8.8 9.8 11.8 12.8 13.8 14.8 16.8 18.75 20.75 22.75 24.75
12 14 17 19 22 24 27 30 32 36 41 46 50 55
11.75 13.75 16.75 18.65 21.65 23.65 26.65 29.65 31.6 35.6 40.6 45.6 49.6 54.55
13.9 16.2 19.6 21.9 25.4 27.7 31.2 34.6 37 41.6 47.3 53.1 57.7 63.5
11.5 13.5 16.5 18 21 23 26 29 31 34 39 44 48 53
0.4 0.4 0.6 0.6 0.6 0.6 0.8 0.8 0.8 1 1 1 1 1
9.2 11.2 13.7 15.7 17.7 20.2 22.4 24.4 26.4 30.4 33.4 36.4 39.4 42.4
1.2 1.5 2 2 2 2.5 2.5 2.5 3 3 3.5 3.5 4 4
0.4 0.4 0.6 0.6 0.6 0.6 0.6 0.6 0.6 / / / / /

Alternative history