端面带孔圆螺母（摘自GB 815-88）
螺纹规格为M2～M10的端面带孔圆螺母。
标记示例：
螺纹规格D＝M5、材料为Q235、不经表面处理的A型端面带孔圆螺母的标记：
螺母 GB 815 M5
螺纹规格为M2～M10的端面带孔圆螺母：
螺纹规格
D
|
dk
|
m
|
d1
|
t
|
B
|
K
|
C
|
d2
|
max
|
min
|
max
|
min
|
M2
|
5.5
|
5.32
|
2
|
1.75
|
1
|
1
|
4
|
1
|
0.2
|
M1.2
|
M2.5
|
7
|
6.78
|
2.2
|
1.95
|
1.2
|
1.2
|
5
|
1.1
|
0.2
|
M1.4
|
M3
|
8
|
7.78
|
2.5
|
2.25
|
1.5
|
1.5
|
5.5
|
1.3
|
0.3
|
M1.4
|
M4
|
10
|
9.78
|
3.5
|
3.2
|
1.5
|
2
|
7
|
1.8
|
0.4
|
M2
|
M5
|
12
|
11.73
|
4.2
|
3.9
|
2
|
2.5
|
8
|
2.1
|
0.4
|
M2
|
M6
|
14
|
13.73
|
5
|
4.7
|
2.5
|
3
|
10
|
2.5
|
0.5
|
M2.5
|
M8
|
18
|
17.73
|
6.5
|
6.14
|
3
|
3.5
|
13
|
3.3
|
0.5
|
M3
|
M10
|
22
|
21.67
|
8
|
7.64
|
3.5
|
4
|
15
|
4
|
0.8
|
M3
|
