十字槽小盘头螺钉 (摘自GB 823-88)
螺纹规格为M2~M8的十字槽小盘头螺钉。
标记示例:
螺纹规格d=M5、公称长度l=20mm、性能等级为4.8级、不经表面处理的H型十字槽小盘头螺钉的标模
螺钉 GB 823 M5×20
螺1规格为M2~M8的十字槽小盘头螺钉:
螺纹规格
d
|
a
|
b
|
da
|
dk
|
k
|
r
|
rf≈
|
r1≈
|
x
|
十 字 槽
|
l
|
max
|
min
|
max
|
max
|
min
|
max
|
min
|
min
|
max
|
槽号
No.
|
m
参考
|
插入深度
|
max
|
min
|
M2
|
0.8
|
25
|
2.6
|
3.5
|
3.2
|
1.4
|
1.26
|
0.1
|
4.5
|
0.6
|
1
|
1
|
2.2
|
1.01
|
0.60
|
3~20
|
M2.5
|
0.9
|
25
|
3.1
|
4.5
|
4.2
|
1.8
|
1.66
|
0.1
|
6
|
0.8
|
1.1
|
1
|
2.6
|
1.42
|
1.00
|
3~25
|
M3
|
1
|
25
|
3.6
|
5.2
|
5.2
|
2.15
|
2.01
|
0.1
|
7
|
1.0
|
1.25
|
2
|
3.5
|
1.43
|
0.86
|
4~30
|
(M3.5)
|
1.2
|
38
|
4.1
|
5.7
|
5.7
|
2.45
|
2.31
|
0.1
|
8
|
1.1
|
1.5
|
2
|
3.8
|
1.73
|
1.15
|
5~35
|
M4
|
1.4
|
38
|
4.7
|
6.64
|
6.64
|
2.75
|
2.61
|
0.2
|
9
|
1.3
|
1.75
|
2
|
4.1
|
2.03
|
1.45
|
5~40
|
M5
|
1.6
|
38
|
5.7
|
8.64
|
8.64
|
3.45
|
3.27
|
0.2
|
12
|
1.6
|
2
|
3
|
4.8
|
2.73
|
2.14
|
6~50
|
M6
|
2
|
38
|
6.8
|
10.07
|
10.07
|
4.1
|
3.8
|
0.25
|
14
|
1.9
|
2.5
|
3
|
6.2
|
2.86
|
2.26
|
8~60
|
M8
|
2.5
|
38
|
9.2
|
13.57
|
13.57
|
5.4
|
5.1
|
0.40
|
18
|
2.6
|
3.2
|
3
|
7.7
|
4.36
|
3.73
|
10~60
|
注:尽可不采用括号内的规格。
l的范围:
公称
|
3
|
4
|
5
|
6
|
8
|
10
|
12
|
(14)
|
16
|
20
|
25
|
30
|
35
|
40
|
45
|
50
|
(55)
|
60
|
min
|
2.8
|
3.76
|
4.76
|
5.76
|
7.71
|
9.71
|
11.65
|
13.65
|
15.65
|
19.58
|
24.58
|
29.58
|
34.5
|
39.5
|
44.5
|
49.5
|
54.05
|
59.05
|
max
|
3.2
|
4.24
|
5.24
|
6.24
|
8.29
|
10.29
|
12.35
|
14.35
|
16.35
|
20.42
|
25.42
|
30.42
|
35.5
|
40.5
|
45.5
|
50.5
|
55.95
|
60.95
|