组合式盖形螺母(摘自GB 802-88)
螺纹规格为M5~M24的组合式盖形螺母。A级用于D≤16的螺母;B级用于D>16的螺母。
标记示例:
螺纹规格D=M12、性能等级为6级、表面氧化的组合式盖形螺母的标记:
螺母 GB 802 M12
螺纹规格为M5~M24的组合式盖形螺母:
螺纹规格
D
|
h
|
b
|
δ
|
e
min
|
e1
|
R≈
|
m
min
|
S
|
h
|
max
|
min
|
M5
|
5.5
|
4
|
0.5
|
8.79
|
7.2
|
3.6
|
9
|
8
|
7.78
|
5.5
|
M6
|
4
|
5
|
0.8
|
11.05
|
9.2
|
4.6
|
11
|
10
|
9.78
|
6.5
|
M8
|
8
|
6
|
0.8
|
18.38
|
13
|
6.5
|
15
|
13
|
12.73
|
8
|
M10
|
10
|
8
|
0.8
|
17.77
|
16
|
8
|
18
|
16
|
15.73
|
10
|
M12
|
12
|
10
|
1
|
20.03
|
18
|
9
|
22
|
18
|
17.73
|
12
|
(M14)
|
13
|
11
|
1
|
23.35
|
20
|
10
|
24
|
21
|
20.67
|
13
|
M16
|
15
|
13
|
1
|
26.75
|
22
|
11.5
|
26
|
24
|
23.67
|
15
|
(M18)
|
14
|
17
|
1.2
|
29.56
|
25
|
12.5
|
29
|
27
|
26.16
|
17
|
M20
|
19
|
16
|
1.2
|
32.95
|
28
|
14
|
32
|
30
|
29.16
|
19
|
(M22)
|
21
|
18
|
1.2
|
37.29
|
30
|
15
|
35
|
34
|
33
|
21
|
M24
|
22
|
19
|
1.2
|
39.55
|
34
|
17
|
38
|
36
|
36
|
22
|
注:尽可能不采用括号内的规格。