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标题: 螺纹攻牙钻孔径和滚造径对照表(老全了) [打印本页]

作者: 小编薇薇    时间: 2016-9-6 00:05
标题: 螺纹攻牙钻孔径和滚造径对照表(老全了)
本帖最后由 小编薇薇 于 2016-9-6 00:11 编辑

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 精 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

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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.


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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

美 制 粗 螺 纹
规格(UNC)标准径
2级牙钻孔径
番数牙外径
最大
最小
NO.1-64(1.854)1.55
1.582
1.425
NO.2-56(2.184)1.80
1.871
1.695
NO.3-48(2.515)2.10
2.146
1.941
NO.4-40(2.845)2.30
2.385
2.157
NO.5-40(3.175)2.60
2.697
2.487
NO.6-32(3.505)2.80
2.895
2.642
NO.8-32(4.166)3.403.5303.302
NO.10-24(4.826)3.903.9623.682
NO.12-24(5.846)4.504.5974.344
1/4 -205.105.2574.979
5/16 -186.606.7316.401
3/8 -168.008.1537.987
7/16 -149.409.5009.144
1/2 -1310.8011.02310.592
9/16 -1212.2012.44611.989
5/8 -1113.6012.86813.386
3/4 -1016.2016.84016.307
7/8 -919.5019.76119.177
1 -822.2022.60621.971
1-1/8 -725.0025.34924.638
1-1/4 -728.2028.52427.813
1-3/8 -6
30.80
31.11530.353
1-1/2 -6
34.00
34.29033.528
1-3/4 -5
39.50
39.82738.964
2 -4-1/2
45.20
45.59344.679


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英 制 螺 纹
规格
钻孔径
硬材
软材
W1/8 - 40
2.65
2.60
W5/32 - 32
3.25
3.20
W3/16 - 24
3.75
3.70
W1/4 - 20
5.10
5.00
W5/16 - 18
6.60
6.50
W3/8 - 16
8.00
7.90
W7/16 - 14
9.40
9.30
W1/2 - 12
10.70
10.50
W9/16 - 12
12.30
12.00
W5/8 - 11
13.70
13.50
W3/4 - 10
16.70
16.50
W7/8 - 9
19.50
19.30
W1 - 8
22.40
22.00
W1-1/8 - 7
25.00
24.80
W1-1/4 - 7
28.30
28.00

英 制 管 螺 纹
规格标准径
钻 孔 径
最大
最小
PS1/16 -286.506.632
6.490
PS1/8 -288.508.637
8.495
PS1/4 - 1911.4011.549
11.341
PS3/8 - 1915.0015.054
14.846
PS1/2 - 1418.5018.773
18.489
PS3/4 - 1424.0024.259
23.975
PS1 - 1130.2030.471
30.111
PS1-1/4 -1138.8039.132
38.772
PS1-1/2 -1144.8045.025
44.665
PS2 - 1156.5056.836
56.476

英 制 管 螺 纹
规格
标准径
有效牙部之长度(最小)中之母螺牙内径标准长度(最小)中之母螺牙内径
使用绞刀时
不用绞刀时
PT1/16 -286.10
6.2
6.244
6.384
PT1/8 -288.10
8.2
8.249
8.388
PT1/4 -1910.70
11
10.962
11.174
PT3/8 -1914.20
14.5
14.448
14.658
PT1/2 -1417.60
18
17.979
18.263
PT3/4 -14
23.00
23.5
23.378
23.663
Pt1 -11
29.00
29.5
29.459
29.822
PT1-1/4 -11
37.50
38
37.976
38.339
PT1-1/2 -11
43.40
44
43.869
44.232
Pt2 -11
54.90
55.5
55.412
55.844

美 制 螺 纹 滚 造 径
规格钻孔径
NPTNPS
使用绞刀时
不用绞刀时
1/16 -276.16.256.35
1/8 -278.338.438.74
1/4 -1810.7211.1311.13
3/8 -18
14.27
14.2714.68
1/2 -1417.4817.8618.26
3/4 -1422.6323.0123.42
1 -11-1/228.5828.9829.36
1-1/4-11-1/237.3137.6938.1
1-1/2-11-1/243.6644.0444.45
2 -11-1/255.5855.9656.36

英 制 螺 纹 滚 造 径
规格
滚造径
W 3/16 - 24
4.08 - 4.05
W 1/4 - 20
5.51 - 5.46
W 5/16 - 18
7.01 - 6.95
W 3/8 - 16
8.48 - 8.41
W 7/16 - 14
9.92 - 9.85
W 1/2 - 12
11.31 - 11.24
W 9/16 -12
12.89 - 12.82
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公 制 螺 纹
规格滚造径
M3.0×0.5
2.63 2.60
M3.0×0.6
2.56 2.53
M3.5×0.6
3.06 3.03
M4.0×0.7
3.49 3.45
M4.0×0.75
3.45 3.41
M4.5×0.75
3.96 3.92
M5.0×0.8
4.43 4.38
M5.0×0.9
4.36 4.31
M6.0×1.0
5.30 5.25
M7.0×1.0
6.30 6.25
M8.0×1.0
7.28 - 7.23
M8.0×1.25
7.12 - 7.07
M9.0×1.25
8.12 - 8.07
M10×1.25
9.10 - 9.04
M10×1.5
8.97 - 8.91
M11×1.5
9.97 - 9.91
M12×1.5
10.92 - 10.87
M12×1.75
10.79 - 10.73
M14×2.0
12.63 - 12.56
M16×2.0
14.63 - 14.56
M18×2.5
16.31 - 16.23
M20×2.5
18.31 - 18.23
M22×2.5
20.31 - 20.23

针 车 用 螺 纹
规格(UNC)
滚造径
SM 1/8 402.735 -2.688
SM 1/8 442.769 -2.722
SM 9/64 403.128 -3.083
SM 11/64 403.855 -3.805
SM 3/16 324.205 -4.155
SM 3/16 28
4.143 -4.093
SM 7/32 32
5.003 -4.955
SM 15/64 28
5.325 -4.955
SM 1/4 40
5.890 -5.735
SM 1/4 28
5.721 -5.366
SM 9/32 28
6.528 -6.648
SM 11/32 28
8.092 -8.432
SM 3/8 29
8.880 -8.015
SM 7/16 30
10.466 -10.401
SM 7/16 16
10.037 -9.967
SM 1/2 2011.819 -11.749
SM 9/16 2013.400 -13.425

美 制 粗 螺 纹
规格(UNC)
滚造径
NO.5-40
2.70 - 2.67
NO.6-32
2.95 - 2.91
NO.8-32
3.60 - 3.57
NO.10-24
4.09 - 4.05
NO.12-24
4.75 - 4.70
1/4 -20
5.50 - 5.45
5/16 -18
6.98 - 6.93
3/8 -16
8.45 - 8.40
7/16 -14
9.89 - 9.83
1/2 -13
11.39 - 11.32
9/16 -12
12.87 - 12.80

美 制 细 螺 纹
规格(UNF)
滚造径
NO.5-44
2.73 - 2.70
NO.6-40
3.05 - 3.02
NO.8-36
3.66 - 3.63
NO.10-32
4.26 - 4.80
NO.12-28
4.84 - 4.80
1/4 -28
5.72 - 5.68
5/16 -24
7.20 - 7.16
3/8 -24
8.79 - 8.74
7/16 -20
10.23 - 10.18
1/2 -20
11.82 - 11.76

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 精 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

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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.


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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

美 制 粗 螺 纹
规格(UNC)标准径
2级牙钻孔径
番数牙外径
最大
最小
NO.1-64(1.854)1.55
1.582
1.425
NO.2-56(2.184)1.80
1.871
1.695
NO.3-48(2.515)2.10
2.146
1.941
NO.4-40(2.845)2.30
2.385
2.157
NO.5-40(3.175)2.60
2.697
2.487
NO.6-32(3.505)2.80
2.895
2.642
NO.8-32(4.166)3.403.5303.302
NO.10-24(4.826)3.903.9623.682
NO.12-24(5.846)4.504.5974.344
1/4 -205.105.2574.979
5/16 -186.606.7316.401
3/8 -168.008.1537.987
7/16 -149.409.5009.144
1/2 -1310.8011.02310.592
9/16 -1212.2012.44611.989
5/8 -1113.6012.86813.386
3/4 -1016.2016.84016.307
7/8 -919.5019.76119.177
1 -822.2022.60621.971
1-1/8 -725.0025.34924.638
1-1/4 -728.2028.52427.813
1-3/8 -6
30.80
31.11530.353
1-1/2 -6
34.00
34.29033.528
1-3/4 -5
39.50
39.82738.964
2 -4-1/2
45.20
45.59344.679


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英 制 螺 纹
规格
钻孔径
硬材
软材
W1/8 - 40
2.65
2.60
W5/32 - 32
3.25
3.20
W3/16 - 24
3.75
3.70
W1/4 - 20
5.10
5.00
W5/16 - 18
6.60
6.50
W3/8 - 16
8.00
7.90
W7/16 - 14
9.40
9.30
W1/2 - 12
10.70
10.50
W9/16 - 12
12.30
12.00
W5/8 - 11
13.70
13.50
W3/4 - 10
16.70
16.50
W7/8 - 9
19.50
19.30
W1 - 8
22.40
22.00
W1-1/8 - 7
25.00
24.80
W1-1/4 - 7
28.30
28.00

英 制 管 螺 纹
规格标准径
钻 孔 径
最大
最小
PS1/16 -286.506.632
6.490
PS1/8 -288.508.637
8.495
PS1/4 - 1911.4011.549
11.341
PS3/8 - 1915.0015.054
14.846
PS1/2 - 1418.5018.773
18.489
PS3/4 - 1424.0024.259
23.975
PS1 - 1130.2030.471
30.111
PS1-1/4 -1138.8039.132
38.772
PS1-1/2 -1144.8045.025
44.665
PS2 - 1156.5056.836
56.476

英 制 管 螺 纹
规格
标准径
有效牙部之长度(最小)中之母螺牙内径标准长度(最小)中之母螺牙内径
使用绞刀时
不用绞刀时
PT1/16 -286.10
6.2
6.244
6.384
PT1/8 -288.10
8.2
8.249
8.388
PT1/4 -1910.70
11
10.962
11.174
PT3/8 -1914.20
14.5
14.448
14.658
PT1/2 -1417.60
18
17.979
18.263
PT3/4 -14
23.00
23.5
23.378
23.663
Pt1 -11
29.00
29.5
29.459
29.822
PT1-1/4 -11
37.50
38
37.976
38.339
PT1-1/2 -11
43.40
44
43.869
44.232
Pt2 -11
54.90
55.5
55.412
55.844

美 制 螺 纹 滚 造 径
规格钻孔径
NPTNPS
使用绞刀时
不用绞刀时
1/16 -276.16.256.35
1/8 -278.338.438.74
1/4 -1810.7211.1311.13
3/8 -18
14.27
14.2714.68
1/2 -1417.4817.8618.26
3/4 -1422.6323.0123.42
1 -11-1/228.5828.9829.36
1-1/4-11-1/237.3137.6938.1
1-1/2-11-1/243.6644.0444.45
2 -11-1/255.5855.9656.36

英 制 螺 纹 滚 造 径
规格
滚造径
W 3/16 - 24
4.08 - 4.05
W 1/4 - 20
5.51 - 5.46
W 5/16 - 18
7.01 - 6.95
W 3/8 - 16
8.48 - 8.41
W 7/16 - 14
9.92 - 9.85
W 1/2 - 12
11.31 - 11.24
W 9/16 -12
12.89 - 12.82
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公 制 螺 纹
规格滚造径
M3.0×0.5
2.63 2.60
M3.0×0.6
2.56 2.53
M3.5×0.6
3.06 3.03
M4.0×0.7
3.49 3.45
M4.0×0.75
3.45 3.41
M4.5×0.75
3.96 3.92
M5.0×0.8
4.43 4.38
M5.0×0.9
4.36 4.31
M6.0×1.0
5.30 5.25
M7.0×1.0
6.30 6.25
M8.0×1.0
7.28 - 7.23
M8.0×1.25
7.12 - 7.07
M9.0×1.25
8.12 - 8.07
M10×1.25
9.10 - 9.04
M10×1.5
8.97 - 8.91
M11×1.5
9.97 - 9.91
M12×1.5
10.92 - 10.87
M12×1.75
10.79 - 10.73
M14×2.0
12.63 - 12.56
M16×2.0
14.63 - 14.56
M18×2.5
16.31 - 16.23
M20×2.5
18.31 - 18.23
M22×2.5
20.31 - 20.23

针 车 用 螺 纹
规格(UNC)
滚造径
SM 1/8 402.735 -2.688
SM 1/8 442.769 -2.722
SM 9/64 403.128 -3.083
SM 11/64 403.855 -3.805
SM 3/16 324.205 -4.155
SM 3/16 28
4.143 -4.093
SM 7/32 32
5.003 -4.955
SM 15/64 28
5.325 -4.955
SM 1/4 40
5.890 -5.735
SM 1/4 28
5.721 -5.366
SM 9/32 28
6.528 -6.648
SM 11/32 28
8.092 -8.432
SM 3/8 29
8.880 -8.015
SM 7/16 30
10.466 -10.401
SM 7/16 16
10.037 -9.967
SM 1/2 2011.819 -11.749
SM 9/16 2013.400 -13.425

美 制 粗 螺 纹
规格(UNC)
滚造径
NO.5-40
2.70 - 2.67
NO.6-32
2.95 - 2.91
NO.8-32
3.60 - 3.57
NO.10-24
4.09 - 4.05
NO.12-24
4.75 - 4.70
1/4 -20
5.50 - 5.45
5/16 -18
6.98 - 6.93
3/8 -16
8.45 - 8.40
7/16 -14
9.89 - 9.83
1/2 -13
11.39 - 11.32
9/16 -12
12.87 - 12.80





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美 制 细 螺 纹
规格(UNF)
滚造径
NO.5-44
2.73 - 2.70
NO.6-40
3.05 - 3.02
NO.8-36
3.66 - 3.63
NO.10-32
4.26 - 4.80
NO.12-28
4.84 - 4.80
1/4 -28
5.72 - 5.68
5/16 -24
7.20 - 7.16
3/8 -24
8.79 - 8.74
7/16 -20
10.23 - 10.18
1/2 -20
11.82 - 11.76








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