沉头带榫螺栓 (摘自GB 11-88)
螺纹规格为M6~M24、C级的沉头带榫螺栓。
标记示例:
螺纹规格d=M10、公称长度l=70mm、性能等级4.8级、不经表面处理的沉头带螺栓的标记:
螺栓 GB 11 M10×70
螺纹M6~M24、C级的沉头带榫螺栓:
螺纹规格
d
|
b
|
dk
|
Sn
|
h
|
K
|
X
max
|
l
|
l≤125
|
125
|
max
|
min
|
max
|
min
|
max
|
min
|
M6
|
18
|
—
|
11.05
|
9.95
|
2.7
|
2.3
|
1.2
|
0.8
|
4.1
|
2.5
|
25~60
|
M8
|
22
|
28
|
14.55
|
13.45
|
2.7
|
2.3
|
1.6
|
1.1
|
5.3
|
3.2
|
30~80
|
M10
|
26
|
32
|
17.55
|
16.45
|
3.8
|
3.2
|
2.1
|
1.4
|
6.2
|
3.8
|
35~100
|
M12
|
30
|
36
|
21.65
|
20.35
|
3.8
|
3.2
|
2.4
|
1.6
|
8.5
|
4.3
|
40~120
|
(M14)
|
34
|
40
|
24.65
|
23.35
|
4.3
|
3.7
|
2.9
|
1.9
|
8.9
|
5
|
45~140
|
M16
|
38
|
44
|
28.65
|
27.35
|
4.8
|
4.2
|
3.3
|
2.2
|
10.2
|
5
|
45~160
|
M20
|
46
|
52
|
36.8
|
35.2
|
4.8
|
4.2
|
4.2
|
2.8
|
13
|
6.3
|
60~200
|
(M22)
|
50
|
56
|
40.8
|
39.2
|
6.3
|
5.7
|
4.5
|
3
|
14.3
|
6.3
|
65~200
|
M24
|
54
|
60
|
45.8
|
44.2
|
6.3
|
5.7
|
5
|
3.3
|
16.5
|
7.5
|
80~200
|
注:尽可能不采用括号内的规格。
l的范围:
公称
|
25
|
30
|
35
|
40
|
45
|
50
|
(55)
|
60
|
65
|
70
|
80
|
90
|
100
|
110
|
min
|
23.95
|
28.95
|
33.75
|
38.75
|
43.75
|
48.75
|
53.5
|
58.5
|
63.5
|
68.5
|
78.5
|
88.25
|
98.25
|
108.25
|
max
|
26.05
|
31.05
|
36.25
|
41.25
|
46.25
|
51.25
|
56.5
|
61.5
|
66.5
|
71.5
|
81.5
|
91.75
|
101.75
|
111.75
|
公称
|
120
|
130
|
140
|
150
|
160
|
180
|
200
|
min
|
118.25
|
128
|
138
|
148
|
156
|
176
|
195.4
|
max
|
121.75
|
132
|
142
|
152
|
164
|
184
|
204.6
|