1型六角开槽螺母—C级 （摘自GB 6179-86）
螺纹规格为M5～M36、C级的1型六角开槽螺母。
标记示例：
螺纹规格D＝M5、性能等级为5级、不经表面处理、C级的1型六角开槽螺母的标记：
螺母 GB 6179 M5
螺纹规格为M5～M36、C级的1型六角开槽螺母：
螺纹规格D
|
dw
|
e
|
m
|
m′
|
n
|
s
|
W
|
开口销
|
min
|
min
|
max
|
min
|
min
|
max
|
min
|
max
|
min
|
max
|
min
|
M5
|
6.9
|
8.63
|
7.6
|
6.1
|
3.5
|
2
|
1.4
|
8
|
7.64
|
5.6
|
4.4
|
1.2×12
|
M6
|
8.7
|
10.89
|
8.9
|
7.4
|
3.9
|
2.6
|
2
|
10
|
9.64
|
6.4
|
4.9
|
1.6×14
|
M8
|
11.5
|
14.2
|
10.94
|
9.14
|
5.1
|
3.1
|
2.5
|
13
|
12.57
|
7.94
|
6.44
|
2×16
|
M10
|
14.5
|
17.59
|
13.54
|
11.74
|
6.4
|
3.4
|
2.8
|
16
|
15.57
|
9.54
|
8.04
|
2.5×20
|
M12
|
16.5
|
19.85
|
17.17
|
15.37
|
8.3
|
4.25
|
3.5
|
18
|
17.57
|
12.17
|
10.37
|
3.2×22
|
（M14）
|
19.2
|
22.78
|
18.9
|
16.8
|
9.7
|
4.25
|
3.5
|
21
|
20.16
|
13.9
|
12.1
|
3.2×26
|
M16
|
22
|
26.17
|
21.9
|
19.8
|
11.3
|
5.7
|
4.5
|
24
|
23.16
|
15.9
|
14.1
|
4×28
|
M20
|
27.7
|
32.95
|
25
|
22.9
|
13.5
|
5.7
|
4.5
|
30
|
29.16
|
19
|
16.9
|
4×36
|
M24
|
33.2
|
39.55
|
30.3
|
27.8
|
16.2
|
6.7
|
5.5
|
36
|
35
|
22.3
|
20.2
|
5×40
|
M30
|
42.7
|
50.85
|
35.4
|
32.4
|
19.5
|
8.5
|
7
|
46
|
45
|
26.4
|
24.3
|
6.3×50
|
M36
|
51.1
|
60.79
|
40.9
|
38.4
|
23.5
|
8.5
|
7
|
55
|
53.8
|
31.9
|
29.4
|
6.3×65
|
注：尽可能不采用括号内的规格。
