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(Non-preferred) dimensions in parentheses.

Small Domed Cap Nuts, Type 1, Type 2

JIS B 1183 - 2001

Display drawing:

日标JIS B1183 - 2001 JIS1183 1183JIS Small Domed Cap Nuts, Type 1, Type 2
Screw Thread
d
M8 M10 M12 (M14) M16 (M18) M20 (M22) M24
P Pitch Coarse thread
Fine thread
m1 Nominal Size
max
min
m max
min
s max
min
b1 min
b2 Nominal Size
g
A min
t1 min
e
dw
R
r
1.25 1.5 1.75 2 2 2.5 2.5 2.5 3
1 1.25 1.25 1.5 1.5 1.5 1.5 1.5 2
15 18 22 24 28 31 34 38 41
15.3 18.3 22.3 24.3 28.3 31.4 34.4 38.4 41.4
14.7 17.7 21.7 23.7 27.7 30.6 33.6 37.6 40.6
6.5 8 10 11 13 15 16 18 19
6.14 7.64 9.64 10.57 12.57 14.57 15.57 17.57 18.48
12 14 17 19 22 24 27 30 32
11.75 13.75 16.75 18.65 21.65 23.65 26.65 29.65 31.6
8 10 12 14 16 18 20 22 24
6.5 8 10 11 13 15 16 18 19
3.5 4 5 6 6 7 7 7 9
10.5 12.5 14.5 16.5 19.5 21.5 23.5 26.5 28.5
0.5 0.5 0.5 1 1 1 1 1 1
13.9 16.2 19.6 21.9 25.4 27.7 31.2 34.6 37
11.5 13.5 16.5 18 21 23 26 29 31
5.5 6.5 7.5 8.5 10 11 12 13.5 14.5
0.5 0.5 0.5 1 1 1 1 1 1
①,Type 1 is that the hexagonal part and the cap part are integrated and no undercut is provided, type 2 is that the hexagonal part and the cap part are integrated and an undercut is provided, and type 3 is that the hexagonal part and the cap part are welded together.

Alternative history