国标内六角螺丝是很常用的螺丝紧固件，它的标准号涵盖了大大小小的规格尺寸，Special Screw China整理了常用的内六角螺栓的标准规格号，以供参考：
1.内六角螺丝各部位的尺寸及标注
|
单位：mm |
|
螺纹的公称直径(d)(2) |
M3 |
M4 |
M5 |
M6 |
M8 |
M10 |
M12 |
(M14) |
||
|
螺栓的螺距(P) |
0.5 |
0.7 |
0.8 |
1 |
1.25 |
1.5 |
1.75 |
2 |
||
|
b |
参考 |
18 |
20 |
22 |
24 |
28 |
32 |
36 |
40 |
|
|
dk |
最大(基准尺寸)* |
5.5 |
7 |
8.5 |
10 |
13 |
16 |
18 |
21 |
|
|
最大** |
5.68 |
7.22 |
8.72 |
10.22 |
13.27 |
16.27 |
18.27 |
21.33 |
||
|
最小 |
5.32 |
6.78 |
8.28 |
9.78 |
12.73 |
15.73 |
17.73 |
20.67 |
||
|
da |
最大 |
3.6 |
4.7 |
5.7 |
6.8 |
9.2 |
11.2 |
13.7 |
15.7 |
|
|
ds |
最大(基准尺寸) |
3 |
4 |
5 |
6 |
8 |
10 |
12 |
14 |
|
|
最小 |
2.86 |
3.82 |
4.82 |
5.82 |
7.78 |
9.78 |
11.73 |
13.73 |
||
|
e |
最小 |
2.87 |
3.44 |
4.58 |
5.72 |
6.86 |
9.15 |
11.43 |
13.72 |
|
|
f |
最大 |
0.51 |
0.60 |
0.60 |
0.68 |
1.02 |
1.02 |
1.45 |
1.45 |
|
|
k |
最大(基准尺寸) |
3 |
4 |
5 |
6 |
8 |
10 |
12 |
14 |
|
|
最小 |
2.86 |
3.82 |
4.82 |
5.70 |
7.64 |
9.64 |
11.57 |
13.57 |
||
|
r |
最小 |
0.1 |
0.2 |
0.2 |
0.25 |
0.4 |
0.4 |
0.6 |
0.6 |
|
|
s |
公称(基准尺寸) |
2.5 |
3 |
4 |
5 |
6 |
8 |
10 |
12 |
|
|
最小 |
2.52 |
3.02 |
4.02 |
5.02 |
6.02 |
8.025 |
10.025 |
12.032 |
||
|
最大(1) |
1栏 |
2.580 |
3.080 |
4.095 |
5.140 |
6.140 |
8.175 |
10.175 |
12.212 |
|
|
2栏 |
2.560 |
3.080 |
4.095 |
5.095 |
6.095 |
8.115 |
10.115 |
12.142 |
||
|
t |
最小 |
1.3 |
2 |
2.5 |
3 |
4 |
5 |
6 |
7 |
|
|
v |
最大 |
0.3 |
0.4 |
0.5 |
0.6 |
0.8 |
1 |
1.2 |
1.4 |
|
|
dw |
最小 |
5.07 |
6.53 |
8.03 |
9.38 |
12.33 |
15.33 |
17.23 |
20.17 |
|
|
w |
最小 |
1.15 |
1.4 |
1.9 |
2.3 |
3.3 |
4 |
4.8 |
5.8 |
|
|
螺纹的公称直径(d)(2) |
M16 |
(M18) |
M20 |
(M22) |
M24 |
(M27) |
M30 |
||
|
螺栓的螺距(P) |
2 |
2.5 |
2.5 |
2.5 |
3 |
3 |
3.5 |
||
|
b |
参考 |
44 |
48 |
52 |
56 |
60 |
66 |
72 |
|
|
dk |
最大(基准尺寸)* |
24 |
27 |
30 |
33 |
36 |
40 |
45 |
|
|
最大** |
24.33 |
27.33 |
30.33 |
33.39 |
36.39 |
40.39 |
45.39 |
||
|
最小 |
23.67 |
26.67 |
29.67 |
32.61 |
35.61 |
39.61 |
44.61 |
||
|
da |
最大 |
17.7 |
20.2 |
22.4 |
24.4 |
26.4 |
30.4 |
33.4 |
|
|
ds |
最大(基准尺寸) |
16 |
18 |
20 |
22 |
24 |
27 |
30 |
|
|
最小 |
15.73 |
17.73 |
19.67 |
21.67 |
23.67 |
26.67 |
29.67 |
||
|
e |
最小 |
16.00 |
16.00 |
19.44 |
19.44 |
21.73 |
21.73 |
25.15 |
|
|
f |
最大 |
1.45 |
1.87 |
2.04 |
2.04 |
2.04 |
2.89 |
2.89 |
|
|
k |
最大(基准尺寸) |
16 |
18 |
20 |
22 |
24 |
27 |
30 |
|
|
最小 |
15.57 |
17.57 |
19.48 |
21.48 |
23.48 |
26.48 |
29.48 |
||
|
r |
最小 |
0.6 |
0.6 |
0.8 |
0.8 |
0.8 |
1 |
1 |
|
|
s |
公称(基准尺寸) |
14 |
14 |
17 |
17 |
19 |
19 |
22 |
|
|
最小 |
14.032 |
14.032 |
17.050 |
17.050 |
19.065 |
19.065 |
22.065 |
||
|
最大(1) |
1栏 |
14.212 |
14.212 |
17.230 |
17.230 |
19.275 |
19.275 |
22.275 |
|
|
2栏 |
14.142 |
14.142 |
|||||||
|
t |
最小 |
8 |
9 |
10 |
11 |
12 |
13.5 |
15.5 |
|
|
v |
最大 |
1.6 |
1.8 |
2 |
2.2 |
2.4 |
2.7 |
3 |
|
|
dw |
最小 |
23.17 |
25.87 |
28.87 |
31.81 |
34.81 |
38.61 |
43.61 |
|
|
w |
最小 |
6.8 |
7.7 |
8.6 |
9.5 |
10.4 |
12.1 |
13.1 |
|
注(1)：s(最大)的1栏适用于强度8.8及10.9的内六角螺丝及性状A2-50、A2-70不锈钢螺丝的内容，2栏适用于强度12.9内六角螺丝，内容。但也可以根据用户及螺丝生产厂家相互之间的协议，强度12.9内六角螺丝的内容也可以适用1栏。
螺纹的公称直径M20以上的s(最大)适用于所有的强度及性状的内六角螺丝内容。
注(2)：内六角螺丝的螺纹公称直径中带括号的尽量不要使用。
备注：1.内六角螺丝头部的侧面带有直纹或网纹[参照JIS B 0951(滚花)]。此时，dk(最大)为该表中的带**的数值。
此外，需要没有滚花的货时，订货人必须指定。但该dk(最大)为该表中带*的数值。
2.对于螺纹的公称直径建议使用的公称长度(?)为粗线框内的内容。
如果?比虚线位置短的为全螺纹，杆部的不完全螺纹长度约为3P。
3.公称长度(?)比虚线位置长的话，?g(最大)及?s(最小)根据下式决定。
?g(最大)=公称长度(?)-b
?s(最小)=?g(最大)-5P
2.内六角螺丝的L和?s及?g
|
单位：mm |
|
螺纹的公称直径(d) |
M3 |
M4 |
M5 |
M6 |
M8 |
|||||||
|
L |
?s min.及?g max. |
|||||||||||
|
公称长度 |
min |
max |
?s |
?g |
?s |
?g |
?s |
?g |
?s |
?g |
?s |
?g |
|
5 |
4.76 |
5.24 |
|
|
|
|
|
|
|
|
|
|
|
6 |
5.76 |
6.24 |
|
|
|
|
|
|
|
|
|
|
|
8 |
7.71 |
8.29 |
|
|
|
|
|
|
|
|
|
|
|
10 |
9.71 |
10.29 |
|
|
|
|
|
|
|
|
|
|
|
12 |
11.65 |
12.35 |
|
|
|
|
|
|
|
|
|
|
|
16 |
15.65 |
16.35 |
|
|
|
|
|
|
|
|
|
|
|
20 |
19.58 |
20.42 |
|
|
|
|
|
|
|
|
|
|
|
25 |
24.58 |
25.42 |
4.5 |
7 |
|
|
|
|
|
|
|
|
|
30 |
29.58 |
30.42 |
9.5 |
12 |
6.5 |
10 |
4 |
8 |
|
|
|
|
|
35 |
34.5 |
35.5 |
|
|
11.5 |
15 |
9 |
13 |
6 |
11 |
|
|
|
40 |
39.5 |
40.5 |
|
|
16.5 |
20 |
14 |
18 |
11 |
16 |
5.75 |
12 |
|
45 |
44.5 |
45.5 |
|
|
|
|
19 |
23 |
16 |
21 |
10.75 |
17 |
|
50 |
49.5 |
50.5 |
|
|
|
|
24 |
28 |
21 |
26 |
15.75 |
22 |
|
55 |
54.4 |
55.6 |
|
|
|
|
|
|
26 |
31 |
20.75 |
27 |
|
60 |
59.4 |
60.6 |
|
|
|
|
|
|
31 |
36 |
25.75 |
32 |
|
65 |
64.4 |
65.6 |
|
|
|
|
|
|
|
|
30.75 |
37 |
|
70 |
69.4 |
70.6 |
|
|
|
|
|
|
|
|
35.75 |
42 |
|
80 |
79.4 |
80.6 |
|
|
|
|
|
|
|
|
45.75 |
52 |
|
90 |
89.3 |
90.7 |
|
|
|
|
|
|
|
|
|
|
|
100 |
99.3 |
100.7 |
|
|
|
|
|
|
|
|
|
|
|
110 |
109.3 |
110.7 |
|
|
|
|
|
|
|
|
|
|
|
120 |
119.3 |
120.7 |
|
|
|
|
|
|
|
|
|
|
|
130 |
129.2 |
130.8 |
|
|
|
|
|
|
|
|
|
|
|
140 |
139.2 |
140.8 |
|
|
|
|
|
|
|
|
|
|
|
150 |
149.2 |
150.8 |
|
|
|
|
|
|
|
|
|
|
|
160 |
159.2 |
160.8 |
|
|
|
|
|
|
|
|
|
|
|
180 |
179.2 |
180.8 |
|
|
|
|
|
|
|
|
|
|
|
200 |
199.05 |
200.95 |
|
|
|
|
|
|
|
|
|
|
|
220 |
219.05 |
220.95 |
|
|
|
|
|
|
|
|
|
|
|
240 |
239.05 |
240.95 |
|
|
|
|
|
|
|
|
|
|
|
260 |
258.95 |
261.05 |
|
|
|
|
|
|
|
|
|
|
|
280 |
278.95 |
281.05 |
|
|
|
|
|
|
|
|
|
|
|
300 |
298.95 |
301.05 |
|
|
|
|
|
|
|
|
|
|
|
螺纹的公称直径(d) |
M10 |
M12 |
(M14) |
M16 |
(M18) |
|||||||
|
L |
?s min.及?g max. |
|||||||||||
|
公称长度 |
min |
max |
?s |
?g |
?s |
?g |
?s |
?g |
?s |
?g |
?s |
?g |
|
5 |
4.76 |
5.24 |
|
|
|
|
|
|
|
|
|
|
|
6 |
5.76 |
6.24 |
|
|
|
|
|
|
|
|
|
|
|
8 |
7.71 |
8.29 |
|
|
|
|
|
|
|
|
|
|
|
10 |
9.71 |
10.29 |
|
|
|
|
|
|
|
|
|
|
|
12 |
11.65 |
12.35 |
|
|
|
|
|
|
|
|
|
|
|
16 |
15.65 |
16.35 |
|
|
|
|
|
|
|
|
|
|
|
20 |
19.58 |
20.42 |
|
|
|
|
|
|
|
|
|
|
|
25 |
24.58 |
25.42 |
|
|
|
|
|
|
|
|
|
|
|
30 |
29.58 |
30.42 |
|
|
|
|
|
|
|
|
|
|
|
35 |
34.5 |
35.5 |
|
|
|
|
|
|
|
|
|
|
|
40 |
39.5 |
40.5 |
|
|
|
|
|
|
|
|
|
|
|
45 |
44.5 |
45.5 |
5.5 |
13 |
|
|
|
|
|
|
|
|
|
50 |
49.5 |
50.5 |
10.5 |
18 |
|
|
|
|
|
|
|
|
|
55 |
54.4 |
55.6 |
15.5 |
23 |
10.25 |
19 |
|
|
|
|
|
|
|
60 |
59.4 |
60.6 |
20.5 |
28 |
15.25 |
24 |
10 |
20 |
|
|
|
|
|
65 |
64.4 |
65.6 |
25.5 |
33 |
20.25 |
29 |
15 |
25 |
11 |
21 |
4.5 |
17 |
|
70 |
69.4 |
70.6 |
30.5 |
38 |
25.25 |
34 |
20 |
30 |
16 |
26 |
9.5 |
22 |
|
80 |
79.4 |
80.6 |
40.5 |
48 |
35.25 |
44 |
30 |
40 |
26 |
36 |
19.5 |
32 |
|
90 |
89.3 |
90.7 |
50.5 |
58 |
45.25 |
54 |
40 |
50 |
36 |
46 |
29.5 |
42 |
|
100 |
99.3 |
100.7 |
60.5 |
68 |
55.25 |
64 |
50 |
60 |
46 |
56 |
39.5 |
52 |
|
110 |
109.3 |
110.7 |
|
|
66.25 |
74 |
60 |
70 |
56 |
66 |
49.5 |
62 |
|
120 |
119.3 |
120.7 |
|
|
75.25 |
84 |
70 |
80 |
66 |
76 |
59.5 |
72 |
|
130 |
129.2 |
130.8 |
|
|
|
|
80 |
90 |
76 |
86 |
69.5 |
82 |
|
140 |
139.2 |
140.8 |
|
|
|
|
90 |
100 |
86 |
96 |
79.5 |
92 |
|
150 |
149.2 |
150.8 |
|
|
|
|
|
|
96 |
106 |
89.5 |
102 |
|
160 |
159.2 |
160.8 |
|
|
|
|
|
|
106 |
116 |
99.5 |
112 |
|
180 |
179.2 |
180.8 |
|
|
|
|
|
|
|
|
119.5 |
132 |
|
200 |
199.05 |
200.95 |
|
|
|
|
|
|
|
|
|
|
|
220 |
219.05 |
220.95 |
|
|
|
|
|
|
|
|
|
|
|
240 |
239.05 |
240.95 |
|
|
|
|
|
|
|
|
|
|
|
260 |
258.95 |
261.05 |
|
|
|
|
|
|
|
|
|
|
|
280 |
278.95 |
281.05 |
|
|
|
|
|
|
|
|
|
|
|
300 |
298.95 |
301.05 |
|
|
|
|
|
|
|
|
|
|
|
螺纹的公称直径(d) |
M20 |
(M22) |
M24 |
(M27) |
M30 |
|||||||
|
L |
?s min.及?g max. |
|||||||||||
|
公称长度 |
min |
max |
?s |
?g |
?s |
?g |
?s |
?g |
?s |
?g |
?s |
?g |
|
5 |
4.76 |
5.24 |
|
|
|
|
|
|
|
|
|
|
|
6 |
5.76 |
6.24 |
|
|
|
|
|
|
|
|
|
|
|
8 |
7.71 |
8.29 |
|
|
|
|
|
|
|
|
|
|
|
10 |
9.71 |
10.29 |
|
|
|
|
|
|
|
|
|
|
|
12 |
11.65 |
12.35 |
|
|
|
|
|
|
|
|
|
|
|
16 |
15.65 |
16.35 |
|
|
|
|
|
|
|
|
|
|
|
20 |
19.58 |
20.42 |
|
|
|
|
|
|
|
|
|
|
|
25 |
24.58 |
25.42 |
|
|
|
|
|
|
|
|
|
|
|
30 |
29.58 |
30.42 |
|
|
|
|
|
|
|
|
|
|
|
35 |
34.5 |
35.5 |
|
|
|
|
|
|
|
|
|
|
|
40 |
39.5 |
40.5 |
|
|
|
|
|
|
|
|
|
|
|
45 |
44.5 |
45.5 |
|
|
|
|
|
|
|
|
|
|
|
50 |
49.5 |
50.5 |
|
|
|
|
|
|
|
|
|
|
|
55 |
54.4 |
55.6 |
|
|
|
|
|
|
|
|
|
|
|
60 |
59.4 |
60.6 |
|
|
|
|
|
|
|
|
|
|
|
65 |
64.4 |
65.6 |
|
|
|
|
|
|
|
|
|
|
|
70 |
69.4 |
70.6 |
|
|
|
|
|
|
|
|
|
|
|
80 |
79.4 |
80.6 |
15.5 |
28 |
11.5 |
24 |
|
|
|
|
|
|
|
90 |
89.3 |
90.7 |
25.5 |
38 |
21.5 |
34 |
15 |
30 |
9 |
24 |
|
|
|
100 |
99.3 |
100.7 |
35.5 |
48 |
31.5 |
44 |
25 |
40 |
19 |
34 |
|
|
|
110 |
109.3 |
110.7 |
45.5 |
58 |
41.5 |
54 |
35 |
50 |
29 |
44 |
20.5 |
38 |
|
120 |
119.3 |
120.7 |
55.5 |
68 |
51.5 |
64 |
45 |
60 |
39 |
54 |
30.5 |
48 |
|
130 |
129.2 |
130.8 |
65.5 |
78 |
61.5 |
74 |
55 |
70 |
49 |
64 |
40.5 |
58 |
|
140 |
139.2 |
140.8 |
75.5 |
88 |
71.5 |
84 |
65 |
80 |
59 |
74 |
50.5 |
68 |
|
150 |
149.2 |
150.8 |
85.5 |
98 |
81.5 |
94 |
75 |
90 |
69 |
84 |
60.5 |
78 |
|
160 |
159.2 |
160.8 |
95.5 |
108 |
91.5 |
104 |
85 |
100 |
79 |
94 |
70.5 |
88 |
|
180 |
179.2 |
180.8 |
115.5 |
128 |
111.5 |
124 |
105 |
120 |
99 |
114 |
90.5 |
108 |
|
200 |
199.05 |
200.95 |
135.5 |
148 |
131.5 |
144 |
125 |
140 |
119 |
134 |
110.5 |
128 |
|
220 |
219.05 |
220.95 |
|
|
|
|
|
|
139 |
154 |
130.5 |
148 |
|
240 |
239.05 |
240.95 |
|
|
|
|
|
|
159 |
174 |
150.5 |
168 |
|
260 |
258.95 |
261.05 |
|
|
|
|
|
|
179 |
194 |
170.5 |
188 |
|
280 |
278.95 |
281.05 |
|
|
|
|
|
|
199 |
214 |
190.5 |
208 |
|
300 |
298.95 |
301.05 |
|
|
|
|
|
|
219 |
234 |
210.5 |
228 |
参考：内六角螺栓的沉头孔及螺栓孔的尺寸
|
单位：mm |
|
螺纹 |
M3 |
M4 |
M5 |
M6 |
M8 |
M10 |
M12 |
M14 |
M16 |
M18 |
M20 |
M22 |
M24 |
M27 |
M30 |
|
ds |
3 |
4 |
5 |
6 |
8 |
10 |
12 |
14 |
16 |
18 |
20 |
22 |
24 |
27 |
30 |
|
d?´ |
3.4 |
4.5 |
5.5 |
6.6 |
9 |
11 |
14 |
16 |
18 |
20 |
22 |
24 |
26 |
30 |
33 |
|
dk |
5.5 |
7 |
8.5 |
10 |
13 |
16 |
18 |
21 |
24 |
27 |
30 |
33 |
36 |
40 |
45 |
|
D´ |
6.5 |
8 |
9.5 |
11 |
14 |
17.5 |
20 |
23 |
26 |
29 |
32 |
35 |
39 |
43 |
48 |
|
k |
3 |
4 |
5 |
6 |
8 |
10 |
12 |
14 |
16 |
18 |
20 |
22 |
24 |
27 |
30 |
|
H?´ |
2.7 |
3.6 |
4.6 |
5.5 |
7.4 |
9.2 |
11 |
12.8 |
14.5 |
16.5 |
18.5 |
20.5 |
22.5 |
25 |
28 |
|
H?´´ |
3.3 |
4.4 |
5.4 |
6.5 |
8.6 |
10.8 |
13 |
15.2 |
17.5 |
19.5 |
21.5 |
23.5 |
25.5 |
29 |
32 |
|
d2 |
2.6 |
3.4 |
4.3 |
5.1 |
6.9 |
8.6 |
10.4 |
12.2 |
14.2 |
15.7 |
17.7 |
19.7 |
21.2 |
24.2 |
26.7 |
扫一扫!
