公差
公差
公差带位置
公差带位置 |
|
---|---|
类型 |
图 形 |
内 螺 纹 的 公 差 带 位 置 |
|
外 螺 纹 的 公 差 带 位 置 |
|
基本偏差
米制普通螺纹的基本偏差 μ m |
||||||
---|---|---|---|---|---|---|
螺距 P/mm |
内 螺 纹 |
外 螺 纹 |
||||
G EI |
H EI |
e es |
f es |
g es |
h es |
|
0.2 |
+17 |
0 |
- |
- |
-17 |
0 |
0.25 |
+18 |
0 |
- |
- |
-18 |
0 |
0.3 |
+18 |
0 |
- |
- |
-18 |
0 |
0.35 |
+19 |
0 |
- |
-34 |
-19 |
0 |
0.4 |
+19 |
0 |
- |
-34 |
-19 |
0 |
0.45 |
+20 |
0 |
- |
-35 |
-20 |
0 |
0.5 |
+20 |
0 |
-50 |
-36 |
-20 |
0 |
0.6 |
+21 |
0 |
-53 |
-36 |
-21 |
0 |
0.7 |
+22 |
0 |
-56 |
-38 |
-22 |
0 |
0.75 |
+22 |
0 |
-56 |
-38 |
-22 |
0 |
0.8 |
+24 |
0 |
-60 |
-38 |
-24 |
0 |
1 |
+26 |
0 |
-60 |
-40 |
-26 |
0 |
1.25 |
+28 |
0 |
-63 |
-42 |
-28 |
0 |
1.5 |
+32 |
0 |
-67 |
-45 |
-32 |
0 |
1.75 |
+34 |
0 |
-71 |
-48 |
-34 |
0 |
2 |
+38 |
0 |
-71 |
-52 |
-38 |
0 |
2.5 |
+42 |
0 |
-80 |
-58 |
-42 |
0 |
3 |
+48 |
0 |
-85 |
-63 |
-48 |
0 |
3.5 |
+53 |
0 |
-90 |
-70 |
-53 |
0 |
4 |
+60 |
0 |
-95 |
-75 |
-60 |
0 |
4.5 |
+63 |
0 |
-100 |
-80 |
-63 |
0 |
5 |
+71 |
0 |
-106 |
-85 |
-71 |
0 |
5.5 |
+75 |
0 |
-112 |
-90 |
-75 |
0 |
6 |
+80 |
0 |
-118 |
-95 |
-80 |
0 |
8 |
+100 |
0 |
-140 |
-118 |
-100 |
0 |
注:外螺纹的上偏差(es)和内螺纹的下偏差(EI)为基本偏差,它决定了公差带的位置。 |
公差等级
米制普通螺纹的公差等级 |
||
---|---|---|
直 径 |
公 差 等 级 |
备 注 |
D1 |
4,5,6,7,8 |
内螺纹大径的最大值依刃具牙顶的削平高度而定。 |
D2 |
4,5,6,7,8 |
|
d1 |
4,5,6,8 |
外螺纹小径的最小值依刃具牙顶的削平高度而定。 |
d2 |
3,4,5,6,7,8,9 |
内螺纹小径公差
内螺纹小径公差(TD1) μm |
|||||
---|---|---|---|---|---|
螺 距 P/mm |
公 差 等 级 |
||||
4 |
5 |
6 |
7 |
8 |
|
0.2 |
38 |
- |
- |
— |
— |
0.25 |
45 |
56 |
- |
— |
— |
0.3 |
53 |
67 |
85 |
— |
— |
0.35 |
63 |
80 |
100 |
— |
— |
0.4 |
71 |
90 |
112 |
— |
— |
0.45 |
80 |
100 |
125 |
— |
— |
0.5 |
90 |
112 |
140 |
180 |
— |
0.6 |
100 |
125 |
160 |
200 |
— |
0.7 |
112 |
140 |
180 |
224 |
— |
0.75 |
118 |
150 |
190 |
236 |
— |
0.8 |
125 |
160 |
200 |
250 |
315 |
1 |
150 |
190 |
236 |
300 |
375 |
1.25 |
170 |
212 |
265 |
335 |
425 |
1.5 |
190 |
236 |
300 |
375 |
475 |
1.75 |
212 |
265 |
335 |
425 |
530 |
2 |
236 |
300 |
375 |
475 |
600 |
2.5 |
280 |
355 |
450 |
560 |
710 |
3 |
315 |
400 |
500 |
630 |
800 |
3.5 |
355 |
450 |
560 |
710 |
900 |
4 |
375 |
475 |
600 |
750 |
950 |
4.5 |
425 |
530 |
670 |
850 |
1060 |
5 |
450 |
560 |
710 |
900 |
1120 |
5.5 |
475 |
600 |
750 |
950 |
1180 |
6 |
500 |
630 |
800 |
1000 |
1250 |
8 |
630 |
800 |
1000 |
1250 |
1600 |
外螺纹大径公差
外螺纹大径公差(Td) μm |
|||
---|---|---|---|
螺 距 P/mm |
公 差 等 级 |
||
4 |
6 |
8 |
|
0.2 |
36 |
56 |
- |
0.25 |
42 |
67 |
- |
0.3 |
48 |
75 |
- |
0.35 |
53 |
85 |
- |
0.4 |
60 |
95 |
- |
0.45 |
63 |
100 |
- |
0.5 |
67 |
106 |
- |
0.6 |
80 |
125 |
- |
0.7 |
90 |
140 |
- |
0.75 |
90 |
140 |
- |
0.8 |
95 |
150 |
236 |
1 |
112 |
180 |
280 |
1.25 |
132 |
212 |
335 |
1.5 |
150 |
236 |
375 |
1.75 |
170 |
265 |
425 |
2 |
180 |
280 |
450 |
2.5 |
212 |
335 |
530 |
3 |
236 |
375 |
600 |
3.5 |
265 |
425 |
670 |
4 |
300 |
475 |
750 |
4.5 |
315 |
500 |
800 |
5 |
335 |
530 |
850 |
5.5 |
355 |
560 |
900 |
6 |
375 |
600 |
950 |
8 |
450 |
710 |
1180 |
内螺纹中径公差
内螺纹中径公差(TD2) μm |
|||||||
---|---|---|---|---|---|---|---|
公称直径D/mm |
螺 距 P/mm |
公 差 等 级 |
|||||
> |
≤ |
4 |
5 |
6 |
7 |
8 |
|
|
|
0.2 |
40 |
- |
- |
- |
- |
0.99 |
1.4 |
0.25 |
45 |
56 |
- |
- |
- |
|
|
0.3 |
48 |
60 |
75 |
- |
- |
|
|
0.2 |
42 |
- |
- |
- |
- |
|
|
0.25 |
48 |
60 |
- |
- |
- |
1.4 |
2.8 |
0.35 |
53 |
67 |
85 |
- |
- |
|
|
0.4 |
56 |
71 |
90 |
- |
- |
|
|
0.45 |
60 |
75 |
95 |
- |
- |
2.8 |
5.6 |
0.35 |
56 |
71 |
90 |
- |
- |
0.5 |
63 |
80 |
100 |
125 |
- |
||
0.6 |
71 |
90 |
112 |
140 |
- |
||
0.7 |
75 |
95 |
118 |
150 |
- |
||
0.75 |
75 |
95 |
118 |
150 |
- |
||
0.8 |
80 |
100 |
125 |
160 |
200 |
||
5.6 |
11.2 |
0.75 |
85 |
106 |
132 |
170 |
- |
1 |
95 |
118 |
150 |
190 |
236 |
||
1.25 |
100 |
125 |
160 |
200 |
250 |
||
1.5 |
112 |
140 |
180 |
224 |
280 |
||
|
|
1 |
100 |
125 |
160 |
200 |
250 |
|
|
1.25 |
112 |
140 |
180 |
224 |
280 |
11.2 |
22.4 |
1.5 |
118 |
150 |
190 |
236 |
300 |
|
|
1.75 |
125 |
160 |
200 |
250 |
315 |
|
|
2 |
132 |
170 |
212 |
265 |
335 |
|
|
2.5 |
140 |
180 |
224 |
280 |
355 |
|
|
1 |
106 |
132 |
170 |
212 |
- |
|
|
1.5 |
125 |
160 |
200 |
250 |
315 |
|
|
2 |
140 |
180 |
224 |
280 |
355 |
22.4 |
45 |
3 |
170 |
212 |
265 |
335 |
425 |
|
|
3.5 |
180 |
224 |
280 |
355 |
450 |
|
|
4 |
190 |
236 |
300 |
375 |
475 |
|
|
4.5 |
200 |
250 |
315 |
400 |
500 |
|
|
1.5 |
132 |
170 |
212 |
265 |
335 |
|
|
2 |
150 |
190 |
236 |
300 |
375 |
|
|
3 |
180 |
224 |
280 |
355 |
450 |
45 |
90 |
4 |
200 |
250 |
315 |
400 |
500 |
|
|
5 |
212 |
265 |
335 |
425 |
530 |
|
|
5.5 |
224 |
280 |
355 |
450 |
560 |
|
|
6 |
236 |
300 |
375 |
475 |
600 |
|
|
2 |
160 |
200 |
250 |
315 |
400 |
|
|
3 |
190 |
236 |
300 |
375 |
475 |
90 |
180 |
4 |
212 |
265 |
335 |
425 |
530 |
|
|
6 |
250 |
315 |
400 |
500 |
630 |
|
|
8 |
280 |
355 |
450 |
560 |
710 |
180 |
355 |
3 |
212 |
265 |
335 |
425 |
530 |
4 |
236 |
300 |
375 |
475 |
600 |
||
6 |
265 |
335 |
425 |
530 |
670 |
||
8 |
300 |
375 |
475 |
600 |
750 |
外螺纹中径公差
外螺纹中径公差(Td2) μm |
|||||||||
---|---|---|---|---|---|---|---|---|---|
公称直径d/mm |
螺 距 P/mm |
公 差 等 级 |
|||||||
> |
≤ |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
|
|
|
0.2 |
24 |
30 |
38 |
48 |
- |
- |
- |
0.99 |
1.4 |
0.25 |
26 |
34 |
42 |
53 |
- |
- |
- |
|
|
0.3 |
28 |
36 |
45 |
56 |
- |
- |
- |
|
|
0.2 |
25 |
32 |
40 |
50 |
- |
- |
- |
|
|
0.25 |
28 |
36 |
45 |
56 |
- |
- |
- |
1.4 |
2.8 |
0.35 |
32 |
40 |
50 |
63 |
80 |
- |
- |
|
|
0.4 |
34 |
42 |
53 |
67 |
85 |
- |
- |
|
|
0.45 |
36 |
45 |
56 |
71 |
90 |
- |
- |
2.8 |
5.6 |
0.35 |
34 |
42 |
53 |
67 |
85 |
- |
- |
0.5 |
38 |
48 |
60 |
75 |
95 |
- |
- |
||
0.6 |
42 |
53 |
67 |
85 |
106 |
- |
- |
||
0.7 |
45 |
56 |
71 |
90 |
112 |
- |
- |
||
0.75 |
45 |
56 |
71 |
90 |
112 |
- |
- |
||
0.8 |
48 |
60 |
75 |
95 |
118 |
150 |
190 |
||
5.6 |
11.2 |
0.75 |
50 |
63 |
80 |
100 |
125 |
- |
- |
1 |
56 |
71 |
90 |
112 |
140 |
180 |
224 |
||
1.25 |
60 |
75 |
95 |
118 |
150 |
190 |
236 |
||
1.5 |
67 |
85 |
106 |
132 |
170 |
212 |
265 |
||
11.2 |
22.4 |
1 |
60 |
75 |
95 |
118 |
150 |
190 |
236 |
1.25 |
67 |
85 |
106 |
132 |
170 |
212 |
265 |
||
1.5 |
71 |
90 |
112 |
140 |
180 |
224 |
280 |
||
1.75 |
75 |
95 |
118 |
150 |
190 |
236 |
300 |
||
2 |
80 |
100 |
125 |
160 |
200 |
250 |
315 |
||
2.5 |
85 |
106 |
132 |
170 |
212 |
265 |
335 |
||
|
|
1 |
68 |
80 |
100 |
125 |
160 |
200 |
250 |
|
|
1.5 |
75 |
95 |
118 |
150 |
190 |
236 |
300 |
|
|
2 |
85 |
106 |
132 |
170 |
212 |
265 |
335 |
22.4 |
45 |
3 |
100 |
125 |
160 |
200 |
250 |
315 |
400 |
|
|
3.5 |
106 |
132 |
170 |
212 |
265 |
335 |
425 |
|
|
4 |
112 |
140 |
180 |
224 |
280 |
355 |
450 |
|
|
4.5 |
118 |
150 |
190 |
236 |
300 |
375 |
475 |
|
|
1.5 |
80 |
100 |
125 |
160 |
200 |
250 |
315 |
|
|
2 |
90 |
112 |
140 |
180 |
224 |
280 |
355 |
|
|
3 |
106 |
132 |
170 |
212 |
265 |
335 |
425 |
45 |
90 |
4 |
118 |
150 |
190 |
236 |
300 |
375 |
475 |
|
|
5 |
125 |
160 |
200 |
250 |
315 |
400 |
500 |
|
|
5.5 |
132 |
170 |
212 |
265 |
335 |
425 |
530 |
|
|
6 |
140 |
180 |
224 |
280 |
355 |
450 |
560 |
|
|
2 |
95 |
118 |
150 |
190 |
236 |
300 |
375 |
|
|
3 |
112 |
140 |
180 |
224 |
280 |
355 |
450 |
90 |
180 |
4 |
125 |
160 |
200 |
250 |
315 |
400 |
500 |
|
|
6 |
150 |
190 |
236 |
300 |
375 |
475 |
600 |
|
|
8 |
170 |
212 |
265 |
335 |
425 |
530 |
670 |
180 |
355 |
3 |
125 |
160 |
200 |
250 |
315 |
400 |
500 |
4 |
140 |
180 |
224 |
280 |
355 |
450 |
560 |
||
6 |
160 |
200 |
250 |
315 |
400 |
500 |
630 |
||
8 |
180 |
224 |
280 |
355 |
450 |
560 |
710 |
旋合长度
米制普通螺纹的旋合长度 mm |
||||||
---|---|---|---|---|---|---|
公称直径 D,d |
螺 距 P |
旋 合 长 度 |
||||
S(短) |
N(中等) |
L(长) |
||||
> |
≤ |
≤ |
> |
≤ |
> |
|
|
|
0.2 |
0.5 |
0.5 |
1.4 |
1.4 |
0.99 |
1.4 |
0.25 |
0.6 |
0.6 |
1.7 |
1.7 |
|
|
0.3 |
0.7 |
0.7 |
2 |
2 |
|
|
0.2 |
0.5 |
0.5 |
1.5 |
1.5 |
|
|
0.25 |
0.6 |
0.6 |
1.9 |
1.9 |
1.4 |
2.8 |
0.35 |
0.8 |
0.8 |
2.6 |
2.6 |
|
|
0.4 |
1 |
1 |
3 |
3 |
|
|
0.45 |
1.3 |
1.3 |
3.8 |
3.8 |
2.8 |
5.6 |
0.35 |
1 |
1 |
3 |
3 |
0.5 |
1.5 |
1.5 |
4.5 |
4.5 |
||
0.6 |
1.7 |
1.7 |
5 |
5 |
||
0.7 |
2 |
2 |
6 |
6 |
||
0.75 |
2.2 |
2.2 |
6.7 |
6.7 |
||
0.8 |
2.5 |
2.5 |
7.5 |
7.5 |
||
5.6 |
11.2 |
0.75 |
2.4 |
2.4 |
7.1 |
7.1 |
1 |
3 |
3 |
9 |
9 |
||
1.25 |
4 |
4 |
12 |
12 |
||
1.5 |
5 |
5 |
15 |
15 |
||
11.2 |
22.4 |
1 |
3.8 |
3.8 |
11 |
11 |
1.25 |
4.5 |
4.5 |
13 |
13 |
||
1.5 |
5.6 |
5.6 |
16 |
16 |
||
1.75 |
6 |
6 |
18 |
18 |
||
2 |
8 |
8 |
24 |
24 |
||
2.5 |
10 |
10 |
30 |
30 |
||
|
|
1 |
4 |
4 |
12 |
12 |
|
|
1.5 |
6.3 |
6.3 |
19 |
19 |
|
|
2 |
8.5 |
8.5 |
25 |
25 |
22.4 |
45 |
3 |
12 |
12 |
36 |
36 |
|
|
3.5 |
15 |
15 |
45 |
45 |
|
|
4 |
18 |
18 |
53 |
53 |
|
|
4.5 |
21 |
21 |
63 |
63 |
|
|
1.5 |
7.5 |
7.5 |
22 |
22 |
|
|
2 |
9.5 |
9.5 |
28 |
28 |
|
|
3 |
15 |
15 |
45 |
45 |
45 |
90 |
4 |
19 |
19 |
56 |
56 |
|
|
5 |
24 |
24 |
71 |
71 |
|
|
5.5 |
28 |
28 |
85 |
85 |
|
|
6 |
32 |
32 |
95 |
95 |
|
|
2 |
12 |
12 |
36 |
36 |
|
|
3 |
18 |
18 |
53 |
53 |
90 |
180 |
4 |
24 |
24 |
71 |
71 |
|
|
6 |
36 |
36 |
106 |
106 |
|
|
8 |
45 |
45 |
132 |
132 |
180 |
355 |
3 |
20 |
20 |
60 |
60 |
4 |
26 |
26 |
80 |
80 |
||
6 |
40 |
40 |
118 |
118 |
||
8 |
50 |
50 |
150 |
150 |
优选公差带
米制普通螺纹的优选公差带 |
||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
内螺纹 |
精度 |
公 差 带 位 置 G |
公 差 带 位 置 H |
|||||||||||||
L |
N |
S |
L |
N |
S |
|||||||||||
精密 |
- |
- |
- |
4H |
5H |
6H |
||||||||||
中等 |
(5G) |
6G |
(7G) |
5H |
6H |
7H |
||||||||||
粗糙 |
- |
(7G) |
(8G) |
- |
7H |
8H |
||||||||||
外螺纹 |
精度 |
公差带位置 e |
公差带位置 f |
公差带位置 g |
公差带位置 h |
|||||||||||
L |
N |
S |
L |
N |
S |
L |
N |
S |
L |
N |
S |
|||||
精密 |
- |
- |
- |
- |
- |
- |
- |
(4g) |
(5g4g) |
(3h4h) |
4h |
(5h4h) |
||||
中等 |
- |
6e |
(7e6e) |
- |
6f |
- |
(5g6g) |
6g |
(7g6g) |
(5h6h) |
6h |
(7h6h) |
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粗糙 |
- |
(8e) |
(9e8e) |
- |
- |
- |
- |
8g |
(9g8g) |
- |
- |
- |
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注:1.大量生产的螺纹紧固件采用带方框的粗字体公差带。 2.优先选用粗字体的公差带,其次选择一般字体的公差带,尽可能不用括号内的公差带。 |
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