Screw Thread
d
M5 M6 M8 M10 M12 M14 M16 M20
P Pitch Coarse thread
Fine thread-1
Fine thread-2
b L≤125
125<L≤200
L>200
c min
da Form A max
Form B max
dc max
ds max
min
du max
dw min
e min
f max
k max
k1 min
r1 min
r2 max
r3 min
r4
s max=nominal size
min
0.8 1 1.25 1.5 1.75 2 2 2.5
/ / 1 1.25 1.5 1.5 1.5 1.5
/ / / 1 1.25 / / /
16 18 22 26 30 34 38 46
/ / 28 32 36 40 44 52
/ / / / / / 57 65
1 1.1 1.2 1.5 1.8 2.1 2.4 3
5.7 6.8 9.2 11.2 13.7 15.7 17.7 22.4
6.2 7.4 10 12.6 15.2 17.7 20.7 25.7
11.8 14.2 18 22.3 26.6 30.5 35 43
5 6 8 10 12 14 16 20
4.82 5.82 7.78 9.78 11.73 13.73 15.73 19.67
5.5 6.6 9 11 13.5 15.5 17.5 22
9.8 12.2 15.8 19.6 23.8 27.6 31.9 39.9
8.71 10.95 14.26 16.5 17.62 19.86 23.15 29.87
1.4 2 2 2 3 3 3 4
5.4 6.6 8.1 9.2 11.5 12.8 14.4 17.1
2 2.5 3.2 3.6 4.6 5.1 5.8 6.8
0.25 0.4 0.4 0.4 0.6 0.6 0.6 0.8
0.3 0.4 0.5 0.6 0.7 0.9 1 1.2
0.1 0.1 0.15 0.2 0.25 0.3 0.35 0.4
3 3.4 4.3 4.3 6.4 6.4 6.4 8.5
8 10 13 15 16 18 21 27
7.78 9.78 12.73 14.73 15.73 17.73 20.67 26.67