内六角花形沉头螺钉(GB/T 2673—2007) mm |
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无螺纹杆径d3约等于螺纹中径或螺纹大径; |
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标记示例: 螺纹规格d=M8、公称长度l=30mm、性能等级为4.8级、不经表面处理的A级内六角花形沉头螺钉的标记: 螺钉 GB/T 2673 M8×30 |
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螺纹规格 d |
M6 |
M8 |
M10 |
M12 |
(M14)a |
M16 |
M20 |
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Pb |
1 |
1.25 |
1.5 |
1.75 |
2 |
2 |
2.5 |
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a |
|
max |
2 |
2.5 |
3 |
3.5 |
4 |
4 |
5 |
b |
|
min |
38 |
38 |
38 |
48 |
48 |
48 |
48 |
dke |
理论 |
max |
12.6 |
17.3 |
20 |
24 |
28 |
32 |
70 |
公称 |
|
11.3 |
15.8 |
18.3 |
22 |
25.5 |
29 |
36 |
|
实际 |
min |
10.9 |
15.4 |
17.8 |
21.5 |
25 |
28.5 |
35.4 |
|
k |
|
max |
3.3 |
4.65 |
5 |
6 |
7 |
8 |
10 |
r |
|
max |
1.5 |
2 |
2.5 |
2.5 |
2.5 |
3 |
3 |
x |
|
max |
2.5 |
3.2 |
3.8 |
4.3 |
5 |
5 |
6.3 |
内六角花形 |
槽号No. |
30 |
40 |
50 |
55 |
55 |
60 |
80 |
|
A 参考 |
5.6 |
6.75 |
8.95 |
11.35 |
11.35 |
13.45 |
17.75 |
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t |
max |
1.8 |
2.5 |
2.7 |
3.5 |
3.7 |
4.1 |
6 |
|
min |
1.4 |
2.1 |
2.3 |
3.02 |
3.22 |
3.62 |
5.42 |
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td |
每1000件钢螺钉的质量(ρ=7.85 kg/dm3) ≈kg |
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公称 |
max |
min |
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8 |
7.7 |
8.3 |
1.75 |
|
|
|
|
|
|
10 |
9.7 |
10.3 |
2.1 |
4.57 |
|
|
|
|
|
12 |
11.6 |
12.4 |
2.44 |
5.19 |
7.47 |
|
|
|
|
(14)a |
13.6 |
14.4 |
2.78 |
5.81 |
8.45 |
|
|
|
|
16 |
15.6 |
16.4 |
3.12 |
6.43 |
9.44 |
|
|
|
|
20 |
19.6 |
20.4 |
3.18 |
7.68 |
11.4 |
16.89 |
|
|
|
25 |
24.6 |
25.4 |
4.67 |
9.23 |
13.86 |
20.45 |
29.68 |
39.72 |
|
30 |
29.6 |
30.4 |
5.52 |
10.79 |
16.31 |
24.01 |
34.56 |
46.26 |
|
35 |
34.5 |
35.5 |
6.38 |
12.34 |
18.77 |
27.57 |
39.43 |
52.8 |
81.98 |
40 |
39.5 |
40.5 |
7.24 |
13.9 |
21.22 |
31.14 |
44.31 |
59.34 |
92.22 |
45 |
44.5 |
45.5 |
8.1 |
15.45 |
23.68 |
34.7 |
49.18 |
65.89 |
102.5 |
50 |
49.5 |
50.5 |
8.95 |
17.01 |
26.13 |
38.26 |
54.06 |
72.43 |
112.7 |
(55)a |
54.4 |
55.6 |
9.81 |
18.56 |
28.59 |
41.82 |
58.93 |
78.97 |
122.9 |
60 |
59.4 |
60.6 |
10.67 |
20.12 |
31.05 |
45.38 |
63.8 |
85.51 |
133.2 |
70 |
69.4 |
70.6 |
|
23.23 |
35.96 |
52.51 |
73.55 |
98.6 |
153.7 |
80 |
79.4 |
80.6 |
|
26.34 |
40.87 |
59.63 |
83.3 |
111.7 |
174.1 |
注:阶梯实线间为商品长度规格范围。 a 尽可能不采用括号内的规格。 b P——螺距。 c 头部尺寸的测量按GB/T 5279规定。 d 虚线以上的长度,螺纹制到头部[b=l-(k+a)];见GB/T 3106 |
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技术条件和引用标准 |
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材料 |
钢 |
不锈钢 |
有色金属 |
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通用技术条件 |
ISO 8992 |
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螺纹 |
公差 |
6g |
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标准 |
GB/T 193、GB/T 9145 |
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机械性能 |
等级 |
4.8 |
A2-70、A3-70 |
CU2、CU3 |
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标准 |
GB/T 3098.1 |
GB/T 3098.6 |
GB/T 3098.10 |
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公差 |
产品等级 |
A |
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标准 |
GB/T 3103.1 |
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内六角花形 |
标准 |
ISO 10664 |
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表面缺陷 |
标准 |
GB/T 5779.1 |
— |
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不经表面处理; 电镀,技术要求按 GB/T 5267.1; 非电解锌片涂层,技术要求 按GB/T 5267.2 |
简单处理 |
简单处理; 电镀,技术要求按 GB/T 5267.1 |
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如需其他表面处理,应由供需双方协议 |
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验收及包装 |
GB/T 90.1、GB/T 90.2 |
质量 kg |
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螺纹规格 |
M6 |
M8 |
M10 |
M12 |
M14 |
M16 |
M20 |
公称长度/mm |
每1000件钢制品的质量≈ |
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8 |
1.75 |
|
|
|
|
|
|
10 |
2.10 |
4.57 |
|
|
|
|
|
12 |
2.44 |
5.19 |
7.47 |
|
|
|
|
14 |
2.78 |
5.81 |
8.45 |
|
|
|
|
16 |
3.12 |
6.43 |
9.44 |
|
|
|
|
20 |
3.81 |
7.68 |
11.40 |
16.89 |
|
|
|
25 |
4.67 |
9.23 |
13.86 |
20.45 |
29.68 |
39.72 |
|
30 |
5.52 |
10.79 |
16.31 |
24.01 |
34.56 |
46.26 |
|
35 |
6.38 |
12.34 |
18.77 |
27.57 |
39.43 |
52.80 |
81.98 |
40 |
7.24 |
13.90 |
21.22 |
31.14 |
44.31 |
59.34 |
92.22 |
45 |
8.10 |
15.45 |
23.68 |
34.70 |
49.18 |
65.89 |
102.5 |
50 |
8.95 |
17.01 |
26.13 |
38.26 |
54.06 |
72.43 |
112.7 |
55 |
9.81 |
18.56 |
28.59 |
41.82 |
58.93 |
78.97 |
122.9 |
60 |
10.67 |
20.12 |
31.05 |
45.38 |
63.80 |
85.51 |
133.2 |
70 |
|
23.23 |
35.96 |
52.51 |
73.55 |
98.60 |
153.7 |
80 |
|
26.34 |
40.87 |
59.63 |
83.30 |
111.7 |
174.1 |