GB/T901 等长双头螺柱 B级 材质、等级：8.8级、10.9级、12.9级 、A2-70、A4-70 、A4-80等
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|
Nominal Diameter |
M2 |
M2.5 |
M3 |
M4 |
M5 |
M6 |
M8 |
M10 |
M12 |
(M14) |
M16 |
(M18) |
M20 |
(M22) |
M24 |
(M27) |
M30 |
(M33) |
M36 |
(M39) |
M42 |
M48 |
M56 |
|
P ① |
Pitch |
0.4 |
0.45 |
0.5 |
0.7 |
0.8 |
1 |
1.25 |
1.5 |
1.75 |
2 |
2 |
2.5 |
2.5 |
2.5 |
3 |
3 |
3.5 |
3.5 |
4 |
4 |
4.5 |
5 |
5.5 |
|
b |
10 |
11 |
12 |
14 |
16 |
18 |
28 |
32 |
36 |
40 |
44 |
48 |
52 |
56 |
60 |
66 |
72 |
78 |
84 |
89 |
96 |
108 |
124 |
|
①,P = pitch of coarse thread. |
|
②,ds ≈ pitch diameter of thread |
|
③,Xmax = 1.5P |