全螺纹攻牙钻孔直径和滚造直径对照表

JUMU实名认证 发表于 2021-01-03 16:06 | 显示全部楼层 | 复制链接分享      上一主题  翻页  下一主题
本表所推选钻头孔径,是针对攻牙加工时,能够很容易的了解钻头直径,而依据市售之标准钻头所选定的,在使用钻头的情况下,由于钻头的形状及尺寸,精度,被钻孔之材质等,对于所钻孔的尺寸,精度有很大影响,所以使用本表之钻孔径,若有不当之处,应实际状况适当的变更钻头直径,本表依据2级牙制订。

公 制 粗 螺 纹
规格标准径
2级牙钻孔径
最大
最小
M1.0×0.250.75
0.785
0.729
M1.1×0.250.85
0.885
0.829
M1.2×0.250.95
0.985
0.929
M1.4×0.31.10
1.142
1.075
M1.6×0.351.25
1.321
1.221
M1.7×0.35
1.35
1.421
1.321
M1.8×0.35
1.45
1.521
1.421
M2.0×0.4
1.60
1.679
1.567
M2.2×0.45
1.75
1.838
1.713
M2.3×0.4
1.90
1.979
1.867
M2.5×0.45
2.10
2.138
2.013
M2.6×0.45
2.20
2.238
2.113
M3.0×0.5
2.50
2.599
2.459
M3.0×0.6
2.40
2.44
2.280
M3.5×0.6
2.90
3.010
2.850
M4.0×0.7
3.30
3.422
3.242
M4.0×0.75
3.25
3.326
3.106
M4.5×0.75
3.80
3.878
3.688
M5.0×0.8
4.20
4.334
4.134
M5.0×0.9
4.10
4.170
3.930
M6.0×1.0
5.00
5.153
4.917
M7.0×1.0
6.00
6.153
5.917
M8.0×1.25
6.80
6.912
6.647
M9.0×1.25
7.80
7.912
7.647
M10×1.5
8.50
8.676
8.376
M11×1.5
9.50
9.676
9.376
M12×1.75
10.30
10.441
10.106
M14×2.0
12.00
12.210
11.735
M16×2.0
14.00
14.210
13.835
M18×2.5
15.50
15.744
15.294
M20×2.5
17.50
17.744
17.294
M22×2.5
19.50
19.744
19.294
M24×3.0
21.00
21.252
2.752
M27×3.0
24.00
24.252
23.752
M30×3.5
26.50
26.771
26.211

公 制 细 螺 纹
规格标准径
2级牙钻孔径
最大
最小
M1.0×0.20.80
0.821
0.783
M1.1×0.20.90
0.921
0.883
M1.2×0.21.00
1.021
0.983
M1.4×0.21.20
1.221
0.183
M1.6×0.21.40
1.421
1.383
M1.7×0.2
1.45
1.500
1.460
M1.8×0.2
1.60
1.621
1.583
M2.0×0.25
1.75
1.785
1.729
M2.2×0.25
1.95
1.985
1.929
M2.3×0.25
2.05
2.061
2.001
M2.5×0.35
2.20
2.221
2.121
M2.6×0.35
2.20
2.246
2.186
M3.0×0.35
2.70
2.721
2.621
M3.5×0.35
3.20
3.221
3.121
M4.0×0.5
3.50
3.599
3.459
M4.5×0.5
4.00
4.099
3.959
M5×0.5
4.50
4.599
4.459
M5.5×0.5
5.00
5.099
4.959
M6.0×0.75
5.30
5.378
5.188
M6.0×0.5
5.50
5.550
5.400
M7.0×0.75
6.30
6.378
61.88
M7.0×0.5
6.50
6.550
64.00
M8.0×1.0
7.00
7.153
6.917
M8.0×0.75
7.30
7.378
7.188
M8×0.5
7.50
7.520
7.400
M9×1.0
8.00
8.153
7.917
M9×0.75
8.30
8.378
8.188
M10×1.25
8.80
8.912
8.647
M10×1.0
9.00
9.153
8.917
M10×0.75
9.30
9.378
9.188
M10×0.5
9.50
9.520
9.400
M11×1.0
10.00
10.153
9.917
M11×0.75
10.30
10.378
10.188
M11×1.5
10.50
10.676
10.376
M12×1.25
10.80
10.912
10.647

公 制 细 螺 纹
规格标准径
2级牙钻孔径
最大
最小
M12×1.011.00
11.153
10.917
M12×0.511.50
11.520
11.4
M14×1.512.50
12.676
12.376
M14×1.013.00
13.153
12.917
M15×1.513.50
13.676
13.376
M15×1.0
14.00
14.153
13.917
M16×1.5
14.50
14.676
14.376
M16×1.0
15.00
15.153
14.917
M17×1.5
15.50
15.676
15.376
M17×1.0
16.00
16.153
15.917
M18×2.0
16.00
16.210
15.835
M18×1.5
16.50
16.670
16.376
M18×1.0
17.00
17.153
16.917
M20×2.0
18.00
18.210
17.835
M20×1.5
18.50
18.676
18.376
M20×1.0
19.00
19.153
18.917
M20×2.0
20.00
20.210
19.835
M22×1.5
20.50
20.676
20.376
M22×1.0
21.00
21.153
20.917
M24×2.0
22.00
22.210
21.835
M24×1.5
22.50
22.676
22.376
M24×1.0
23.00
23.153
22.917
M25×2.0
23.00
23.210
22.835
M25×1.5
23.50
23.676
23.376
M25×1.0
24.00
24.153
23.917
M26×1.5
24.50
24.676
24.376
M27×2.0
25.00
25.210
24.835
M27×1.5
25.50
25.676
25.376
M27×1.0
26.00
26.153
25.917
M28×2.0
26.00
26.210
25.835
M28×1.5
26.50
26.676
26.376
M28×1.0
27.00
27.153
26.917
M30×3.0
27.00
27.252
26.752
M30×2.0
28.00
28.210
27.835
M30×1.5
28.50
28.676
28.376
M30×1.0
29.00
29.153
28.917
M32×2.0
30.00
30.210
29.835
M32×1.5
30.50
30.676
30.376
M33×3.0
30.00
30.252
29.752
M33×2.0
31.00
31.210
30.835
M33×1.5
31.50
31.376
31.376
M35×1.5
33.50
33.676
33.376
M36×3.0
33.00
33.252
32.752
M36×2.0
34.00
34.210
33.835
M36×1.5
34.50
34.676
34.376

美 制 细 螺 纹
规格(UNF)标准径
2级牙钻孔径
最大
最小
番数牙外径

NO.0-80(1.524)
1.25
1.305
1.182
NO.1-72(1.854)
1.55
1.612
1.474
NO.2-64(2.184)
1.85
1.912
1.756
NO.3-56(2.515)
2.10
2.197
2.025
NO.4-48(2.845)
2.40
2.458
2.271
NO.5-44(3.175)2.702.7402.551
NO.6-40(3.505)2.903.0222.820
NO.8-36(4.166)3.503.6063.404
NO.10-32(4.826)4.104.1653.963
NO.12-28(5.846)4.604.7244.496
1/4 -285.505.5885.360
5/16 -246.907.0356.782
3/8 -248.508.6368.382
7/16 -209.9010.0339.729
1/2 -2011.5011.60711.329
9/16 -1812.9013.08112.751
5/8 -1814.5014.68114.351
3/4 -1617.5014.67817.323
7/8 -1420.5020.67520.270
1 -1223.2023.57123.114
1-1/8 -12
26.50
26.74626.289
1-1/4 -12
29.50
29.92129.464
1-3/8 -12
32.80
33.09632.464
1-1/2 -12
36.00
36.27035.814

无 屑 丝 攻 钻 孔 径
规格
精度等级
RH4.5.6
RH7.8
RH9
M1.0×0.250.86
0.88
-
M1.1×0.250.96
0.98
-
M1.2×0.251.06
1.08
-
M1.4×0.31.24
1.25
-
M1.6×0.351.41
1.43
-
M1.7×0.35
1.51
1.53
-
M1.8×0.35
1.61
1.63
-
M2.0×0.4
1.78
1.80
-
M2.2×0.45
1.95
1.98
-
M2.3×0.4
2.08
2.10
-
M2.5×0.45
2.25
2.28
-
M2.6×0.45
2.35
1.38
-
M3.0×0.5
2.73
2.75
-
M3.0×0.6
3.17
3.20
-
M4.0×0.7
3.62
3.65
3.69
M5.0×0.8
4.56
4.60
4.64
M6.0×1.0
5.45
5.50
5.55
M7.0×1.0
6.45
6.50
6.55
M8.0×1.25
7.31
7.38
7.44
M10×1.5
9.18
9.25
9.32
M10×1.25
9.31
9.38
9.44
M12×1.75
11.04
11.12
11.21
M12×1.25
11.31
11.38
11.44
注:无槽丝攻之钻孔径,在上表所列之数值,由于被加工材料之材质、硬度、形状、尺寸等之影响,多少会有所变动,因此参考上表之同时,亦请增减若干.

美 制 管 螺 纹
规格(UNEF)标准径
2级牙钻孔径
最大
最小
NO.12 -324.704.8264.623
1/4 -325.605.6905.486
5/16 -327.107.2647.087
3/8 -328.708.8658.661
7/16 -2810.2010.33810.135
1/2 -2811.8011.93811.709
9/16 -2813.2013.38613.132
5/8 -2414.8014.98614.732
3/4 -2017.8017.95817.678
7/8 -2021.0021.13320.853
1 -2024.0024.30824.028

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