普通螺纹攻丝前底孔尺寸
螺纹的直径和螺距钻孔直径车孔直径螺纹的直
径和螺距
钻孔直径车孔直径
铸铁
青铜
钢
黄铜
直径公差铸铁
青铜
钢
黄铜
直径公差
M4*0.7 M4*0.5 3.3
3.5
3.3
3.5
M27**3
M27*2
23.7
24.7
23.9
24.9
23.5 +0.3
M5*0.8 M5*0.5 4.1
4.4
4.2
4.5
M27*1.5
M27*1
25.3
25.8
25.5
26
M6*1
M6*0.75 4.9
5.1
5
5.2
4.9
-
+0.3 M30*3.5
M30*3
26
26.7
26.2
26.9
26 +0.3
M8*1.25 M8*1 6.6
6.9
6.7
7
6.6
-
+0.2 M30*2
M30*1.5
27.7
28.3
27.9
28.5
M10*1.5 M10*1.25 M10*1 8.4
8.6
8.9
8.5
8.7
9
8.3
-
-
+0.25 M33*3.5
M33*3
M33*2
29
29.7
30.7
29.2
29.9
30.9
29 +0.3
M12*1.75 M12*1.5 M12*1.25 M12*1 10.1
10.4
10.6
10.9
10.2
10.5
10.7
11
10 +0.25 M33*1.5
M36*4
M36*3
M36*1.5
31.3
31.5
32.7
34.3
31.5
31.7
32.9
34.5
-
31.4
32.5
34.3
-
+0.3
+0.17
+0.17
M14*2 M14*1.5 M14*1 11.8
12.4
12.9
11.9
12.5
13
11.7 +0.3 M39*4
M39*3
M39*1.5
34.6
35.7
37.3
34.8
35.9
37.5
34.4
35.5
37.3
+0.3
+0.17
+0.17
M16*2 M16*1.5 M16*1 13.8
14.4
14.9
13.9
14.5
15
13.7 +0.3 M42*4.5
M42*3
M42*1.5
37.1
38.7
40.3
37.3
38.9
40.5
36.8
38.5
40.3
+0.3
+0.17
+0.17
M18*2.5 M18*2 M18*1.5 M18*1 15.3
15.8
16.4
16.9
15.4
15.9
16.5
17
15.1 +0.3 M45*4.5
M45*3
M45*1.5
40
41.8
43.3
40.2
42
43.5
39.8
41.5
43.3
+0.3
+0.17
+0.17
M20*2.5 M20*2 M20*1.5 M20*1 17.2
17.7
18.3
18.8
17.4
17.9
18.5
19
17.1 +0.3 M48*5
M48*3
M48*1.5
42.5
44.8
46.3
42.7
45
46.5
42.2
44.5
46.3
+0.3
+0.17
+0.17
M22*2.5 M22*2 M22*1.5 M22*1 19.2
19.7
20.3
20.8
19.4
19.9
20.5
21
19.1 +0.3 M52*5
M52*3
M52*1.5
46.4
48.8
50.3
46.6
49
50.5
46.2
48.5
50.2
+0.3
+0.17
+0.17
M24*3 M24*2 M24*1 20.7
21.7
22.8
20.9
21.9
23
20.5 +0.3 M56*5.5
M56*4
M56*2
-
-
-
-
-
-
49.7
51.4
53.7
+0.3
+0.2
+0.2
普通及英制螺纹底孔钻孔尺寸
螺纹的直径和螺距车孔直径螺纹的直
径和螺距
说明车孔直径
直径公差直径公差
M60*5.5 M60*4 M60*2 53.7
55.4
57.7
+0.3
+0.2
+0.2
M105*4
M105*2
P—螺距
d—螺纹公称
直径
d T—螺纹底
孔直径
P<1时d T＝
d-P
P>1时
d T＝
d-(1.04~1.08)
P
100.4
102.7
+0.23
+0.23
M64*6 M64*4 M64*2 57.1
59.4
61.7
+0.3
+0.2
+0.2
M110*4
M110*2
105.4
107.7
+0.23
+0.23
M68*6 M68*4 M68*2 61.1
63.4
65.7
+0.3
+0.2
+0.2
M115*4
M115*2
M160*3 *
110.4
112.7
156.5
+0.23
+0.23
+0.26
M72*4 M72*2 67.4
69.7
+0.2
+0.2
M120*4
M120*2
115.4
117.7
+0.23
+0.23
M76*4 M76*2 71.4
73.7
+0.2
+0.2
M125*4
M125*2
120.4
122.7
+0.26
+0.26
M80*4 M80*2 75.4
77.7
+0.2
+0.2
M130*4
M130*2
125.4
127.7
+0.26
+0.26
M85*4 M85*2 80.4
82.7
+0.23
+0.23
M135*4
M135*2
130.4
132.7
+0.26
+0.26
M90*4 M90*2 85.4
87.7
+0.23
+0.23
M140*4
M140*2
135.4
137.7
+0.26
+0.26
M95*4 M95*2 90.4
92.7
+0.23
+0.23
M145*4
M145*2
140.4
142.7
+0.26
+0.26
M100*4 M100*2 95.4
97.7
+0.23
+0.23
M150*4
M150*2
145.4
147.7
+0.26
+0.26
螺纹公称直径(in) 牙数/
英寸
螺纹底孔直径螺纹公称
直径
牙数/
英寸
螺纹底孔直径铸铁
青铜
钢
黄铜
铸铁
青铜
钢
黄铜
3/16 24 3.6 3.7 7/8 9 19.1 19.3 1/4 20 5.0 5.1 1 8 21.9 22.1 5/16 18 6.4 6.5 1⅛7 24.5 24.7 3/8 16 7.8 7.9 1+1/4 7 27.7 27.9 7/16 14 9.1 9.3 1+1/2 6 33.4 33.6 1/2 12 10.3 10.5 1+5/8 5 35.6 35.8 9/16 12 12 12.2 1+3/4 5 38.8 39 5/8 11 13.3 13.5 1+7/8 4+1/4 41.4 41.6 3/4 10 16.2 16.4 2 4+1/4 44.5 44.8
王万桃2013-11-14。