十字槽盘头自攻螺钉(GB/T 845—1985) mm |
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标记示例: 螺纹规格ST3.5、公称长度l=16 mm、H型槽、镀锌钝化的C型十字槽盘头自攻螺钉的标记: 自攻螺钉 GB 845 ST3.5×16 |
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螺纹规格 |
螺距P |
a max |
da max |
dk |
K |
r min |
rf ≈ |
十字槽 |
y 参考 |
l的范围 |
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槽号 No |
H型 |
Z型 |
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m 参考 |
插入深度 |
m 参考 |
插入深度 |
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max |
min |
max |
min |
min |
max |
min |
max |
C型 |
F型 |
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ST2.2 |
0.8 |
0.8 |
2.8 |
4 |
3.7 |
1.6 |
1.4 |
0.1 |
3.2 |
0 |
1.9 |
0.85 |
1.2 |
2 |
0.95 |
1.2 |
2 |
1.6 |
4.5~16 |
ST2.9 |
1.1 |
1.1 |
3.5 |
5.6 |
5.3 |
2.4 |
2.15 |
0.1 |
5 |
1 |
3 |
1.4 |
1.8 |
3 |
1.45 |
1.75 |
2.6 |
2.1 |
6.5~19 |
ST3.5 |
1.3 |
1.3 |
4.1 |
7 |
6.64 |
2.6 |
2.35 |
0.1 |
6 |
2 |
3.9 |
1.4 |
1.9 |
4 |
1.5 |
1.9 |
3.2 |
2.5 |
9.5~25 |
ST4.2 |
1.4 |
1.4 |
4.9 |
8 |
7.64 |
3.1 |
2.8 |
0.2 |
6.5 |
2 |
4.4 |
1.9 |
2.4 |
4.4 |
1.95 |
2.35 |
3.7 |
2.8 |
9.5~32 |
ST4.8 |
1.6 |
1.6 |
5.5 |
9.5 |
9.14 |
3.7 |
3.4 |
0.2 |
8 |
2 |
4.9 |
2.4 |
2.9 |
4.8 |
2.3 |
2.75 |
4.3 |
3.2 |
9.5~38 |
ST5.5 |
1.8 |
1.8 |
6.3 |
11 |
10.57 |
4 |
3.7 |
0.25 |
9 |
3 |
6.4 |
2.6 |
3.1 |
6.2 |
2.55 |
3 |
5 |
3.6 |
13~38 |
ST6.3 |
1.8 |
1.8 |
7.1 |
12 |
11.57 |
4.6 |
4.3 |
0.25 |
10 |
3 |
6.9 |
3.1 |
3.6 |
6.8 |
3.05 |
3.5 |
6 |
3.6 |
13~38 |
ST8 |
2.1 |
2.1 |
9.2 |
16 |
15.57 |
6 |
5.6 |
0.4 |
13 |
4 |
9 |
4.15 |
4.7 |
8.9 |
4.05 |
4.5 |
7.5 |
4.2 |
16~50 |
ST9.5 |
2.1 |
2.1 |
10.7 |
20 |
19.48 |
7.5 |
7.1 |
0.4 |
16 |
4 |
10.1 |
5.2 |
5.8 |
10.1 |
5.25 |
5.7 |
8 |
4.2 |
16~50 |
技术条件 |
螺纹 |
机械性能 |
公差产品等级 |
十字槽 |
表面处理 |
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GB/T 5280 |
GB/T 3098.5 |
A级 |
GB/T 944.1 |
镀锌钝化 |
公称长度l 的商品规格系列: mm |
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公称 |
4.5 |
6.5 |
9.5 |
13 |
16 |
19 |
22 |
25 |
32 |
38 |
45 |
50 |
|
C型 |
min |
3.7 |
5.7 |
8.7 |
12.2 |
15.2 |
18.2 |
21.2 |
24.2 |
30.7 |
36.7 |
43.7 |
48.7 |
max |
5.3 |
7.3 |
10.3 |
13.8 |
16.8 |
19.8 |
22.8 |
25.8 |
33.3 |
39.3 |
46.3 |
51.3 |
|
F型 |
min |
3.7 |
5.7 |
8.7 |
12.2 |
15.2 |
18.2 |
20.7 |
23.7 |
30.7 |
36.7 |
43.5 |
48.5 |
max |
4.5 |
6.5 |
9.5 |
13 |
16 |
19 |
22 |
25 |
32 |
38 |
45 |
50 |
质量 kg |
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螺纹规格 |
ST2.2 |
ST2.9 |
ST3.5 |
ST4.2 |
ST4.8 |
ST5.5 |
ST6.3 |
ST8 |
ST9.5 |
公称长度/mm |
每1000件钢制品的质量 ≈ |
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4.5 |
0.18 |
|
|
|
|
|
|
|
|
6.5 |
0.21 |
0.52 |
|
|
|
|
|
|
|
9.5 |
0.27 |
0.61 |
0.95 |
1.44 |
2.30 |
|
|
|
|
13 |
0.33 |
0.72 |
1.11 |
1.67 |
2.60 |
3.51 |
4.79 |
|
|
16 |
0.38 |
0.81 |
1.24 |
1.86 |
2.87 |
3.86 |
5.27 |
10.79 |
20.32 |
19 |
|
0.91 |
1.38 |
2.06 |
3.13 |
4.21 |
5.74 |
11.58 |
21.55 |
22 |
|
|
1.52 |
2.26 |
3.40 |
4.56 |
6.22 |
12.37 |
22.78 |
25 |
|
|
1.66 |
2.45 |
3.66 |
4.91 |
6.70 |
13.16 |
24.01 |
32 |
|
|
|
2.91 |
4.28 |
5.73 |
7.81 |
15.01 |
26.89 |
38 |
|
|
|
|
4.81 |
6.43 |
8.76 |
16.59 |
29.35 |
45 |
|
|
|
|
|
|
|
18.43 |
32.23 |
50 |
|
|
|
|
|
|
|
19.75 |
34.28 |