螺纹攻牙钻孔底径和滚造径对照表

最大

最小

M1.0×0.250.750.7850.729M1.1×0.250.850.8850.829M1.2×0.250.950.9850.929M1.4×0.3 1.1 1.142 1.075M1.6×0.35 1.25 1.321 1.221M1.7×0.35 1.35 1.421 1.321M1.8×0.35 1.45 1.521 1.421M2.0×0.4 1.6 1.679 1.567M2.2×0.45 1.75 1.838 1.713M2.3×0.4 1.9 1.979 1.867M2.5×0.45 2.1 2.138 2.013M2.6×0.45 2.2 2.238 2.113M3.0×0.5 2.5 2.599 2.459M3.0×0.6 2.4 2.44 2.28M3.5×0.6 2.9 3.01 2.85M4.0×0.7 3.3 3.422 3.242M4.0×0.75 3.25 3.326 3.106M4.5×0.75

3.8

3.878

3.688

规格

公 制 精 螺 纹

2级牙钻孔径

标准径

M5.0×0.8 4.2 4.334 4.134M5.0×0.9 4.1 4.17 3.93M6.0×1.05 5.153 4.917M7.0×1.06 6.153 5.917M8.0×1.25 6.8 6.912 6.647M9.0×1.257.87.9127.647M10×1.58.58.6768.376M11×1.59.59.6769.376M12×1.7510.310.44110.106M14×2.01212.2111.735M16×2.01414.2113.835M18×2.515.515.74415.294M20×2.517.517.74417.294M22×2.519.519.74419.294M24×3.02121.252 2.752M27×3.02424.25223.752M30×3.5

26.5

26.771

26.211

最大

最小

规格

公 制 细 螺 纹

2级牙钻孔径

标准径

M1.0×0.20.80.8210.783 M1.1×0.20.90.9210.883 M1.2×0.21 1.0210.983 M1.4×0.2 1.2 1.2210.183 M1.6×0.2 1.4 1.421 1.383 M1.7×0.2 1.45 1.5 1.46 M1.8×0.2 1.6 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 2.2 2.221 2.121 M2.6×0.35 2.2 2.246 2.186 M3.0×0.35 2.7 2.721 2.621 M3.5×0.35 3.2 3.221 3.121 M4.0×0.5 3.5 3.599 3.459 M4.5×0.54 4.099 3.959 M5×0.5 4.5 4.599 4.459 M5.5×0.55 5.099 4.959 M6.0×0.75 5.3 5.378 5.188 M6.0×0.5 5.5 5.55 5.4 M7.0×0.75 6.3 6.37861.88

M7.0×0.5 6.5 6.5564M8.0×1.077.153 6.917M8.0×0.757.37.3787.188M8×0.57.57.527.4M9×1.088.1537.917M9×0.758.38.3788.188M10×1.258.88.9128.647M10×1.099.1538.917M10×0.759.39.3789.188M10×0.59.59.529.4M11×1.01010.1539.917M11×0.7510.310.37810.188M11×1.510.510.67610.376M12×1.25

10.8

10.912

10.647

最大

最小

M12×1.01111.15310.917M12×0.511.511.5211.4M14×1.5

12.5

12.676

12.376

规格

公 制 细 螺 纹

2级牙钻孔径

标准径

M14×1.01313.15312.917 M15×1.513.513.67613.376 M15×1.01414.15313.917 M16×1.514.514.67614.376 M16×1.01515.15314.917 M17×1.515.515.67615.376 M17×1.01616.15315.917 M18×2.01616.2115.835 M18×1.516.516.6716.376 M18×1.01717.15316.917 M20×2.01818.2117.835 M20×1.518.518.67618.376 M20×1.01919.15318.917 M20×2.02020.2119.835 M22×1.520.520.67620.376 M22×1.02121.15320.917 M24×2.02222.2121.835 M24×1.522.522.67622.376 M24×1.02323.15322.917 M25×2.02323.2122.835 M25×1.523.523.67623.376

M25×1.02424.15323.917 M26×1.524.524.67624.376 M27×2.02525.2124.835 M27×1.525.525.67625.376 M27×1.02626.15325.917 M28×2.02626.2125.835 M28×1.526.526.67626.376 M28×1.02727.15326.917 M30×3.02727.25226.752 M30×2.02828.2127.835 M30×1.528.528.67628.376 M30×1.02929.15328.917 M32×2.03030.2129.835 M32×1.530.530.67630.376 M33×3.03030.25229.752 M33×2.03131.2130.835 M33×1.531.531.37631.376 M35×1.533.533.67633.376 M36×3.03333.25232.752 M36×2.03434.2133.835 M36×1.534.534.67634.376

最大

最小

番数牙外径NO.0-80(1.524) 1.25 1.305 1.182NO.1-72(1.854) 1.55 1.612 1.474NO.2-64(2.184) 1.85 1.912 1.756NO.3-56(2.515) 2.1 2.197 2.025NO.4-48(2.845) 2.4 2.458 2.271NO.5-44(3.175) 2.7 2.74 2.551NO.6-40(3.505) 2.9 3.022 2.82NO.8-36(4.166) 3.5 3.606 3.404NO.10-32(4.826) 4.1 4.165 3.963NO.12-28(5.846)

4.6 4.724 4.4962001/4/28

5.5 5.588 5.365/16 -24

6.9

7.035 6.7822003/8/24

8.58.6368.3827/16 -20

9.910.0339.7292001/2/2011.511.60711.3299/16 -18

12.9

13.081

12.751规格(UNF)

美 制 细 螺 纹

2级牙钻孔径

标准径

2005/8/1814.514.68114.351

2003/4/1617.514.67817.323

2007/8/1420.520.67520.27

1月12日23.223.57123.114 1-1/8 -1226.526.74626.289 1-1/4 -1229.529.92129.464 1-3/8 -1232.833.09632.464 1-1/2 -123636.2735.814

无屑丝攻钻孔径

精度等级

规格

RH4.5.6RH7.8RH9

M1.0×0.250.860.88-

M1.1×0.250.960.98-

M1.2×0.25 1.06 1.08-

M1.4×0.3 1.24 1.25-

M1.6×0.35 1.41 1.43-

M1.7×0.35 1.51 1.53-

M1.8×0.35 1.61 1.63-

M2.0×0.4 1.78 1.8-

M2.2×0.45 1.95 1.98-

M2.3×0.4 2.08 2.1-

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 3.2-

M4.0×0.7 3.62 3.65 3.69 M5.0×0.8 4.56 4.6 4.64 M6.0×1.0 5.45 5.5 5.55 M7.0×1.0 6.45 6.5 6.55 M8.0×1.257.317.387.44 M10×1.59.189.259.32 M10×1.259.319.389.44 M12×1.7511.0411.1211.21 M12×1.2511.3111.3811.44

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.

最大

最小

NO.12 -32 4.7 4.826 4.6231/4 -32 5.6 5.69 5.4865/16 -327.17.2647.0873/8 -328.78.8658.6617/16 -28

10.210.33810.1352001/2/2811.811.93811.7099/16 -28

13.213.38613.1322005/8/2414.814.98614.7322003/4/2017.817.95817.6782007/8/202121.13320.8531月20日

24

24.308

24.028

规格(UNC)

番数牙外径最大

最小

NO.1-64(1.854) 1.55 1.582 1.425NO.2-56(2.184)

1.8

1.871

1.695

美 制 粗 螺 纹

2级牙钻孔径

标准径

美 制 管 螺 纹

2级牙钻孔径

规格(UNEF)

标准径

NO.3-48(2.515) 2.1 2.146 1.941 NO.4-40(2.845) 2.3 2.385 2.157 NO.5-40(3.175) 2.6 2.697 2.487 NO.6-32(3.505) 2.8 2.895 2.642 NO.8-32(4.166) 3.4 3.53 3.302

NO.10-

3.9 3.962 3.682 24(

4.826)

NO.12-

4.5 4.597 4.344 24(

5.846)

2001/4/20 5.1 5.257 4.979 5/16 -18 6.6 6.731 6.401 2003/8/1688.1537.987 7/16 -149.49.59.144 2001/2/1310.811.02310.592 9/16 -1212.212.44611.989 2005/8/1113.612.86813.386

2003/4/1016.216.8416.307

2007/8/919.519.76119.177

1月8日22.222.60621.971 1-1/8 -72525.34924.638 1-1/4 -728.228.52427.813 1-3/8 -630.831.11530.353 1-1/2 -63434.2933.528

1-3/4 -539.539.82738.9642 -4-1/2

45.2

45.593

44.679

软材

2.6

3.23.756.57.99.310.51213.516.519.3222

4.8

规格

W1-1/8 - 7

25W3/4 - 1016.7W7/8 - 919.5W1 - 822.4W1/2 - 1210.7W9/16 - 1212.3W5/8 - 1113.7W5/16 - 18 6.6W3/8 - 168W7/16 - 149.4W5/32 - 32 3.25W3/16 - 24 3.75W1/4 - 20 5.1英 制 螺 纹

钻孔径

硬材

W1/8 - 40 2.65

28

最大

最小

6.632 6.498.637

8.495

11.54911.34115.05414.84618.77318.48924.25923.97530.47130.11139.13238.77245.02544.66556.83656.476

英 制 管 螺 纹

规格

标准径

制 管 螺 纹

PS1-1/4 -1138.8PS1-1/2 -1144.8PS2 - 11

56.5PS1/2 - 1418.5PS3/4 - 1424PS1 - 1130.2PS1/8 -288.5

PS1/4 - 1911.4PS3/8 - 1915W1-1/4 - 728.3钻 孔 径

PS1/16 -28 6.5

使用绞刀时

PT1/16 -28 6.1 6.244 6.384PT1/8 -288.18.249

8.388

PT1/4 -1910.710.96211.174PT3/8 -1914.214.44814.658PT1/2 -1417.617.97918.263PT3/4 -142323.37823.663Pt1 -112929.45929.822PT1-1/4 -1137.537.97638.339PT1-1/2 -1143.443.86944.232Pt2 -11

54.9

55.41255.844

不用绞刀时

55.5钻孔径

NPT 使用绞刀时

NPS

美 制 螺 纹 滚 造 径

规格

14.51823.529.53844标准径

不用绞刀时

6.28.2

11规格

有效牙部之长度(最小)中之母螺牙标准长度(最小)中之母螺牙内径英 制 管 螺 纹

6.25 6.358.438.7411.1311.1314.2714.681

7.861

8.2623.0123.4228.982

9.3637.6938.144.0444.4555.96

56.36

W 5/16 - 187.01 - 6.95W 3/8 - 168.48 - 8.41W 7/16 - 14

9.92 - 9.85

规格滚造径W 3/16 - 24 4.08 - 4.05W 1/4 - 20 5.51 - 5.46英 制 螺 纹 滚 造 径

1-1/4-11-1/237.311-1/2-11-1/243.662 -11-1/2

55.58

2001/2/1417.482003/4/14

22.631 -11-1/228.582001/8/278.332001/4/1810.722003/8/1814.271/16 -27

6.1

M3.0×0.5M3.0×0.6M3.5×0.6M4.0×0.7M4.0×0.75M4.5×0.75M5.0×0.8M5.0×0.9M6.0×1.0M7.0×1.0M8.0×1.0M8.0×1.25M9.0×1.25M10×1.25M10×1.5

8.97 - 8.91

5.30 5.25

6.30 6.25

7.28 - 7.237.12 - 7.07

8.12 - 8.07

9.10 - 9.043.06 3.033.49 3.453.45 3.413.96 3.924.43 4.384.36 4.31W 1/2 - 1211.31 - 11.24W 9/16 -12

12.89 - 12.82

2.63 2.602.56 2.53规格公 制 螺 纹

滚造径

M11×1.5M12×1.5M12×1.75M14×2.0M16×2.0M18×2.5M20×2.5M22×2.5

规格(UNC)SM 1/8 40SM 1/8 44SM 9/64 40SM 11/64 40SM 3/16 32SM 3/16 28SM 7/32 32SM 15/64 28

5.325 -4.955

2.769 -2.722

3.128 -3.0833.855 -3.805

4.205 -4.1554.143 -4.093

5.003 -4.9551

6.31 - 16.2318.31 - 18.2320.31 - 20.23

滚造径2.735 -2.688针 车 用 螺 纹

9.97 - 9.9110.92 - 10.8710.79 - 10.7312.63 - 12.5614.63 - 14.56

SM 1/4 40SM 1/4 28SM 9/32 28SM 11/32 28SM 3/8 29SM 7/16 30SM 7/16 16SM 1/2 20SM 9/16 20

规格(UNC)NO.5-40NO.6-32NO.8-32NO.10-24NO.12-24

2001/4/205/16 -18

6.98 - 6.93

2.70 - 2.672.95 - 2.91

3.60 - 3.57

4.09 - 4.054.75 - 4.70

5.50 - 5.4510.466 -10.40110.037 -9.96711.819 -11.74913.400 -13.425

滚造径美 制 粗 螺 纹

5.890 -5.7355.721 -5.366

6.528 -6.6488.092 -8.4328.880 -8.015

2003/8/167/16 -14

2001/2/139/16 -12

规格(UNF)NO.5-44NO.6-40NO.8-36NO.10-32NO.12-28

2001/4/285/16 -24

2003/8/247/16 -20

2001/2/20美 制 细 螺 纹

5.72 - 5.687.20 - 7.16

8.79 - 8.7410.23 - 10.18

11.82 - 11.76

滚造径2.73 - 2.703.05 - 3.023.66 - 3.634.26 - 4.804.84 - 4.80

8.45 - 8.409.89 - 9.83

11.39 - 11.3212.87 - 12.80