六角头螺栓 细杆 B级(GB/T 5784—2025)
六角头螺栓 细杆 B级(GB/T 5784—2025)
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六角头螺栓 细杆 B级(GB/T 5784—2025) mm |
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标记示例:螺纹规格d=M12、公称长度l=80mm、性能等级为5.8级、不经表面处理、B级的六角头螺栓的标记:螺栓 GB5784 M12×80 材料:钢、不锈钢;括号内规格为非优选。 等效标准:ISO 4015、DIN EN 24015、ANSI/ASME B 18.2.3.2M 部分等效、EN 24015 |
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螺纹规格 d |
M3 |
(M3.5) |
M4 |
M5 |
M6 |
(M7) |
M8 |
M10 |
M12 |
(M14) |
M16 |
(M18) |
M20 |
|
|
P |
螺距 |
0.5 |
0.6 |
0.7 |
0.8 |
1 |
1 |
1.25 |
1.5 |
1.75 |
2 |
2 |
2.5 |
2.5 |
|
b |
L≤125 |
12 |
13 |
14 |
16 |
18 |
20 |
22 |
26 |
30 |
34 |
38 |
42 |
46 |
|
125<L≤200 |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
40 |
44 |
48 |
52 |
|
|
da |
最大值 |
3.6 |
4.1 |
4.7 |
5.7 |
6.8 |
7.8 |
9.2 |
11.2 |
13.7 |
15.7 |
17.7 |
20.2 |
22.4 |
|
ds |
≈ |
2.6 |
3.05 |
3.5 |
4.4 |
5.3 |
6.2 |
7.1 |
8.9 |
10.7 |
12.5 |
14.5 |
16.3 |
18.2 |
|
dw |
最小值 |
4.72 |
5.22 |
6.06 |
7.06 |
8.74 |
9.47 |
11.47 |
14.47 |
16.47 |
19.15 |
22 |
24.85 |
27.7 |
|
e |
最小值 |
5.88 |
6.44 |
7.5 |
8.63 |
10.89 |
11.94 |
14.2 |
17.59 |
19.85 |
22.78 |
26.17 |
29.56 |
32.95 |
|
k |
公称 |
2 |
2.4 |
2.8 |
3.5 |
4 |
4.8 |
5.3 |
6.4 |
7.5 |
8.8 |
10 |
11.5 |
12.5 |
|
最大值 |
2.2 |
2.6 |
3 |
3.74 |
4.24 |
5.04 |
5.54 |
6.69 |
7.79 |
9.09 |
10.29 |
11.85 |
12.85 |
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|
最小值 |
1.8 |
2.2 |
2.6 |
3.26 |
3.76 |
4.56 |
5.06 |
6.11 |
7.21 |
8.51 |
9.71 |
11.15 |
12.15 |
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|
k1 |
最小值 |
1.26 |
1.54 |
1.82 |
2.28 |
2.63 |
3.19 |
3.54 |
4.28 |
5.05 |
5.96 |
6.8 |
7.81 |
8.51 |
|
s |
最大值=公称 |
5.5 |
6 |
7 |
8 |
10 |
11 |
13 |
16 |
18 |
21 |
24 |
27 |
30 |
|
最小值 |
5.2 |
5.7 |
6.64 |
7.64 |
9.64 |
10.57 |
12.57 |
15.57 |
17.57 |
20.16 |
23.16 |
26.16 |
29.16 |
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|
x |
最大值 |
1.25 |
1.5 |
1.75 |
2 |
2.5 |
2.5 |
3.2 |
3.8 |
4.3 |
5 |
5 |
6.3 |
6.3 |
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螺纹长度b(螺纹长度随公称长度变化) mm |
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|
螺纹规格d |
M3 |
(M3.5) |
M4 |
M5 |
M6 |
(M7) |
M8 |
M10 |
M12 |
(M14) |
M16 |
(M18) |
M20 |
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公称长度l /mm |
螺纹长度b |
||||||||||||
|
20 |
12 |
13 |
14 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
|
25 |
12 |
13 |
14 |
16 |
18 |
- |
- |
- |
- |
- |
- |
- |
- |
|
30 |
12 |
13 |
14 |
16 |
18 |
20 |
22 |
- |
- |
- |
- |
- |
- |
|
35 |
- |
13 |
14 |
16 |
18 |
20 |
22 |
- |
- |
- |
- |
- |
- |
|
40 |
- |
- |
14 |
16 |
18 |
20 |
22 |
26 |
- |
- |
- |
- |
- |
|
45 |
- |
- |
- |
16 |
18 |
20 |
22 |
26 |
30 |
- |
- |
- |
- |
|
50 |
- |
- |
- |
16 |
18 |
20 |
22 |
26 |
30 |
34 |
- |
- |
- |
|
55 |
- |
- |
- |
- |
18 |
20 |
22 |
26 |
30 |
34 |
38 |
- |
- |
|
60 |
- |
- |
- |
- |
18 |
20 |
22 |
26 |
30 |
34 |
38 |
42 |
- |
|
65 |
- |
- |
- |
- |
- |
20 |
22 |
26 |
30 |
34 |
38 |
42 |
46 |
|
70 |
- |
- |
- |
- |
- |
20 |
22 |
26 |
30 |
34 |
38 |
42 |
46 |
|
80 |
- |
- |
- |
- |
- |
- |
22 |
26 |
30 |
34 |
38 |
42 |
46 |
|
90 |
- |
- |
- |
- |
- |
- |
- |
26 |
30 |
34 |
38 |
42 |
46 |
|
100 |
- |
- |
- |
- |
- |
- |
- |
26 |
30 |
34 |
38 |
42 |
46 |
|
110 |
- |
- |
- |
- |
- |
- |
- |
- |
30 |
34 |
38 |
42 |
46 |
|
120 |
- |
- |
- |
- |
- |
- |
- |
- |
30 |
34 |
38 |
42 |
46 |
|
130 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
40 |
44 |
48 |
60 |
|
140 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
40 |
44 |
48 |
52 |
|
150 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
44 |
48 |
52 |
六角头螺栓—细杆—B级(GB/T 5784—1986)
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六角头螺栓—细杆—B级(GB/T5784—1986)mm |
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螺纹末端按GB2规定;ds约等于螺纹中径或螺纹大径;凹穴型式由制造者选择,亦可不制出凹穴。 |
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标记示例: 螺纹规格d=M12、公称长度l=80mm、性能等级为5.8级、不经表面处理、B级的六角头螺栓的标记: 螺栓 GB 5784 M12×80 |
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螺纹规格 d |
b参考 |
e min |
K |
r min |
s |
x max |
l的范围 |
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l≤125 |
125<l≤200 |
公称 |
min |
max |
max |
min |
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M3 |
12 |
— |
5.98 |
2 |
1.80 |
2.20 |
0.1 |
5.5 |
5.20 |
1.25 |
20~30 |
|
M4 |
14 |
— |
7.50 |
2.8 |
2.60 |
3.00 |
0.2 |
7 |
6.64 |
1.75 |
20~40 |
|
M5 |
16 |
— |
8.63 |
3.5 |
3.26 |
3.74 |
0.2 |
8 |
7.64 |
2 |
25~50 |
|
M6 |
18 |
— |
10.89 |
4 |
3.76 |
4.24 |
0.25 |
10 |
9.64 |
2.5 |
25~60 |
|
M8 |
22 |
28 |
14.20 |
5.3 |
5.06 |
5.54 |
0.4 |
13 |
12.57 |
3.2 |
30~80 |
|
M10 |
26 |
32 |
17.59 |
6.4 |
6.11 |
6.69 |
0.4 |
16 |
15.57 |
3.8 |
40~100 |
|
M12 |
30 |
36 |
19.85 |
7.5 |
7.21 |
7.79 |
0.6 |
18 |
17.57 |
4.3 |
45~120 |
|
(M14) |
34 |
40 |
22.78 |
8.8 |
8.51 |
9.09 |
0.6 |
21 |
20.16 |
5 |
50~140 |
|
M16 |
38 |
44 |
26.17 |
10 |
9.71 |
10.29 |
0.6 |
24 |
23.16 |
5 |
55~150 |
|
M20 |
46 |
52 |
32.95 |
12.5 |
12.15 |
12.85 |
0.8 |
30 |
29.16 |
6.3 |
65~150 |
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技术条件 |
材料 |
螺纹公差 |
机械性能等级 |
公差产品等级 |
表面处理 |
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钢 |
6g |
5.8、6.8、8.8 |
B级 |
1.不经处理;2.镀锌钝化;3.氧化 |
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不锈钢 |
A2-70 |
不经处理 |
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公称长度l的商品规格系列:mm |
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公称 |
20 |
25 |
30 |
35 |
40 |
45 |
50 |
(55) |
60 |
(65) |
70 |
80 |
90 |
100 |
110 |
120 |
130 |
140 |
150 |
|
min |
18.9 |
23.9 |
28.9 |
33.7 |
38.7 |
43.7 |
48.7 |
53.5 |
58.5 |
63.5 |
68.5 |
78.5 |
88.3 |
98.3 |
108.3 |
118.3 |
128 |
138 |
148 |
|
max |
21.1 |
26.1 |
31.1 |
36.3 |
41.3 |
46.3 |
51.3 |
56.5 |
61.5 |
66.5 |
71.5 |
81.5 |
91.7 |
101.7 |
111.7 |
121.7 |
132 |
142 |
152 |
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注:尽可能不采用括号内的规格。 |
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质量kg |
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螺纹规格 |
M3 |
M4 |
M5 |
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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|
20 |
1.28 |
2.45 |
|
|
|
|
|
|
|
|
|
25 |
1.49 |
2.82 |
4.58 |
7.15 |
|
|
|
|
|
|
|
30 |
1.70 |
3.20 |
5.18 |
8.01 |
15.78 |
|
|
|
|
|
|
35 |
|
3.57 |
5.78 |
8.86 |
17.34 |
|
|
|
|
|
|
40 |
|
3.95 |
6.38 |
9.72 |
18.89 |
31.60 |
|
|
|
|
|
45 |
|
|
6.98 |
10.58 |
20.45 |
34.06 |
49.90 |
|
|
|
|
50 |
|
|
7.58 |
11.44 |
22.00 |
36.51 |
53.47 |
76.32 |
|
|
|
55 |
|
|
|
12.29 |
23.56 |
38.97 |
57.03 |
81.19 |
113.3 |
|
|
60 |
|
|
|
13.15 |
25.11 |
41.43 |
60.59 |
86.07 |
119.9 |
|
|
65 |
|
|
|
|
26.67 |
43.88 |
64.15 |
90.94 |
126.4 |
215.1 |
|
70 |
|
|
|
|
28.22 |
46.34 |
67.71 |
95.82 |
133.0 |
225.3 |
|
80 |
|
|
|
|
31.33 |
51.25 |
74.84 |
105.6 |
146.0 |
245.8 |
|
90 |
|
|
|
|
|
56.16 |
81.96 |
115.3 |
159.1 |
266.2 |
|
100 |
|
|
|
|
|
61.07 |
89.09 |
125.1 |
172.2 |
286.7 |
|
110 |
|
|
|
|
|
|
96.21 |
134.8 |
185.3 |
307.2 |
|
120 |
|
|
|
|
|
|
103.3 |
144.6 |
198.4 |
327.7 |
|
130 |
|
|
|
|
|
|
|
154.3 |
211.5 |
348.2 |
|
140 |
|
|
|
|
|
|
|
164.1 |
224.5 |
368.6 |
|
150 |
|
|
|
|
|
|
|
|
237.6 |
389.1 |
