螺丝攻牙径对照表(集合版)

最大

最小

最大

最小

最大

最小

规格

精度最大最小

最大最小最大最小最大

最小规格精度最大最小

M1.0×0.20.800.8210.783M1.0×0.250.750.7850.729(螺丝牙外径）硬材软材M1.1×0.20.900.9210.883M1.1×0.250.850.8850.829No.0-80(1.524) 1.25 1.305 1.182 # 1 -64G5 1.76 1.68 2.65 2.6M1.2×0.2 1.00 1.0210.983M1.2×0.250.950.9850.929No.1-72(1.854) 1.55 1.612 1.474 #2 -56G4 2.04 1.96 3.25 3.2M1.4×0.2 1.20 1.221 1.183M1.4×0.3 1.10 1.142 1.075No.2-64(2.184) 1.85 1.912 1.756 # 3-48G4 2.35 2.25 3.75 3.7M1.6×0.2 1.40 1.421 1.383M1.6×0.35 1.25 1.321 1.221No.3-56(2.515) 2.1 2.197 2.025 #4 -40G5 2.64 2.54 5.15M1.7×0.2 1.50 1.521 1.483M1.7×0.35 1.35 1.421 1.321No.4-48(2.845) 2.4 2.458 2.271 #5 -40G5 2.97 2.87 6.6 6.5M1.8×0.2 1.60 1.621 1.583M1.8×0.35 1.45 1.521 1.421No.5-44(3.175) 2.7 2.74 2.551 #6 -32G5

3.22 3.1187.9M2.0×0.25 1.75 1.785 1.729M2.0×0.4 1.60 1.679 1.576No.6-40(3.505) 2.9 3.022 2.82 #8 -32G6

3.89 3.789.49.3M2.2×0.25 1.95 1.985 1.929M2.2×0.45 1.75 1.838 1.713No.8-36(

4.166) 3.5 3.606 3.404 #10 -24G6 4.44 4.310.710.5M2.3×0.25 2.05 2.085 2.029M2.3×0.4 1.90 1.979 1.867No.10-32(4.826) 4.1 4.165 3.963 #12 -24G6

5.07 4.9612.312M2.5×0.35 2.20 2.221 2.121M2.5×0.45 2.10 2.138 2.013No.12-28(5.846)

4.6 4.724 4.496 1/4" -20G7

5.86 5.7313.713.5M2.6×0.35 2.20 2.321 2.221M2.6×0.45 2.20 2.238 2.1132001/4/28 5.5 5.588 5.36 5/16" -18G77.387.231

6.7

16.5M3.0×0.35 2.70 2.721 2.621M3.0×0.5 2.50 2.599 2.4595/16 -24 6.97.035 6.782 3/8" -16G78.898.7219.5

19.3M3.5×0.35 3.20 3.221 3.121M3.5×0.6 2.90 3.010 2.8502003/8/248.58.6368.382 7/16" -14G810.410.0222.422M4.0×0.5 3.50 3.599 3.459M4.0×0.7 3.30 3.422 3.2427/16 -209.910.0339.729 1/2" -13

G8

11.92

11.7

2524.8M4.5×0.5 4.00 4.099 3.959M4.5×0.75 3.80 3.878 3.6881/2-2011.511.60711.32928.3

28

M5.0×0.5 4.50 4.599 4.459M5.0×0.8 4.20 4.334 4.1349/16 -1812.913.08112.751 0 -80G5 1.45 1.39M5.5×0.5 5.00 5.099 4.959M6.0×1.0 5.00 5.153 4.9175/8一1814.5

14.681

14.351 1 -72G5 1.7711.7M6.0×0.75 5.30 5.378 5.188M7.0×1.0 6.00 6.153 5.9173/4一1617.517.678

17.323

2 -64G4 2.06 1.98M6.0×0.5 5.50 5.599 5.459M8.0×1.25 6.80 6.912 6.6477/8一1420.5

20.67520.27 3 -56G4 2.37 2.29M7.0×0.75 6.30 6.378 6.188M9.0×1.257.807.9127.6471一1223.223.57123.114 4 -48G5 2.68 2.59M7.0×0.5 6.50 6.599 6.459M10×1.58.508.6768.3761-1/8-1226.526.74626.289 5 -44G5 2.99 2.9标准径

钻孔径M8.0×1.07.007.153 6.917M11×1.59.509.6769.3761-1/4-1229.529.92129.464 6 -40G5 3.29 3.19最大

最小

M8.0×0.757.307.3787.188M12×1.7510.3010.44110.1061-3/8-1232.833.09632.639 8 -36G5 3.91 3.81M8.0×0.57.507.5997.459M14×2.012.0012.21011.8351-1/2-12

36

36.271

35.814

10 -32G6 4.53 4.44 6.5 6.632 6.49M9.0×1.08.008.1537.917M16×2.014.0014.21013.835 12 -28G6

5.13

5.038.58.6378.495 M9.0×0.758.308.3788.188M18×2.515.5015.74415.294 1/4" -28G76

5.9111.411.54911.341M10×1.258.808.9128.647M20×2.517.50

17.744

17.294 5/16" -24

G77.537.421515.05414.846M10×1.09.009.1538.917M22×2.5

19.5019.744

19.294最大

最小 3/8" -24G79.18.9918.5

18.773

18.489

M10×0.759.309.3789.188M24×3.0

21.0021.25220.752No.12-32 4.7 4.826 4.623 7/16" -20G810.6210.4824

24.25923.975M10×0.59.509.5999.459M27×3.024.0024.25223.7521/4 -32 5.6 5.69 5.486 1/2" -20

G8

12.2

12.06

30.2

30.47130.111

M11×1.010.0010.1539.917M30×3.526.5026.77126.2115/16 -327.17.2647.08738.8

39.13238.772

M11×0.7510.3010.37810.188M33×3.529.5029.77129.2113/8 -328.78.8658.66144.845.02544.665M12×1.510.5010.67610.376M36×4.032.0032.27031.6707/16 -2810.210.33810.13556.556.836

56.476

M12×1.2510.80

10.912

10.647

M39×4.0

35.00

35.270

34.670

1/2一2811.8

11.938

11.709M12×1.011.0011.15310.9179/16 -2413.213.386

13.132规格

精度

最大

最小

M12×0.511.5011.59911.4595/8一2414.814.98614.732M1.0×0.25G40.920.89M14×1.512.5012.67612.3763/7一20

17.817.95817.678M1.2×0.25G4 1.12 1.09标准径

M14×1.013.0013.15312.917最大

最小7/8一502121.13320.853M1.4×0.30G4 1.3 1.26M15×1.513.5013.67613.376(螺丝牙外径）

1一20

24

24.308

24.028

M1.6×0.35G4 1.47 1.42M15×1.014.0014.15313.917No.1 -64(1.854) 1.55 1.582 1.425M1.7×0.35G4 1.57 1.52PT 1/16 - 28 6.1 6.2 6.244 6.384M16×1.514.5014.67614.376No.2 -56(2.184) 1.8 1.871 1.695M1.8×0.35G4 1.67 1.62PT 1/8 - 288.18.28.2498.388M16×1.015.0015.15314.917No.3 -48(2.515) 2.1 2.146 1.941M2.0×0.40G4 1.84 1.79PT 1/4 - 1910.71110.96211.174M17×1.515.5015.67615.376No.4 -40(2.845) 2.3 2.385 2.157M2.2×0.45

G5 2.04 1.97PT 3/8 - 1914.214.514.44814.658M17×1.016.0016.15315.917No.5 -40(3.175) 2.6 2.697 2.487规格

标准径

最大

最小

M2.3×0.40G4 2.14 2.09PT 1/2 - 14

17.6

1817.97918.263M18×2.016.0016.21015.835No.6 -32(3.505) 2.8 2.895 2.642SM1/16 - 80 1.25 1.281 1.211M2.5×0.45G5 2.34 2.27PT 3/4 - 1423

23.523.37823.663M18×1.516.5016.67616.376No.8 -32(4.166) 3.4 3.53 3.302SM5/64 - 64 1.55 1.593 1.513M2.6×0.45G5 2.44 2.37PT 1- 112929.529.459

29.822M18×1.017.0017.15316.917No.10-24(4.826) 3.9 3.962 3.683SM3/32 - 56 1.90 1.936 1.841M3.0×0.50G5 2.82 2.75PT 1-1/4 - 11

37.5

3837.97638.339M20×2.018.0018.21017.835No.12-24(5.486) 4.5 4.597 4.344SM3/32 -100 2.10 2.156 2.081M3.5×0.60G5 3.27 3.19PT 1-1/2 - 1143.44443.86944.232M20×1.518.5018.67618.3761/4 --20(6.35) 5.1 5.257 4.979SM1/8 - 32 2.30 2.393 2.233M4.0×0.70G6 3.72 3.65PT 2 - 11

54.955.5

55.412

55.844

M20×1.019.0019.15318.9175/16 -18(7.93) 6.6 6.731 6.401SM1/8 - 40 2.50 2.551 2.421M5.0×0.80G6 4.67 4.59M22×2.020.0020.21019.8353/8—16(9.52)88.1537.798SM1/8 - 44 2.50 2.605 2.485M6.0×1.0G7 5.59 5.49M22×1.520.5020.67620.3767/16—14(11.11)9.49.559.144SM1/8 - 48 2.60 2.657 2.547M7.0×1.0G7 6.59 6.49M22×1.021.0021.15320.9171/2—13(12.7)10.811.02310.592SM9/64 - 32 2.70 2.79 2.630M8.0×1.25G77.497.36M24×2.022.0022.21021.8359/16—12(14.28)12.212.44611.989SM9/64 - 40 2.90 2.948 2.818M10×1.50G79.349.22M24×1.522.5022.67622.3765/8—11(15.87)13.612.86813.386 SM11/64 -32 3.50 3.584 3.424M10×1.25G79.499.35M24×1.023.0023.15322.9173/4—10(19.05)16.518.8416.307 SM11/64 -40 3.70 3.742 3.612M12×1.75G811.2311.09 6.7 6.843 6.561M25×2.023.0023.21022.8357/8—9(22.22)19.5

19.761

19.177SM3/16 - 24 3.60 3.658 3.498M12×1.25

G9

11.5

11.36

8.78.8488.566M25×1.523.5023.67623.3761—8(25.4)22.222.606

21.971

SM3/16 - 28 3.80 3.844 3.68411.711.8911.445M25×1.024.0024.15323.9171-1/8-7(28.57)

25

25.34924.638SM3/16 - 32 3.90 3.98 3.82015.215.39514.95M26×1.524.5024.67624.3761-1/4-7

28.228.52427.813SM3/16 - 40 4.05 4.138 4.0081919.17218.631M27×2.025.0025.21024.8351-3/8-630.831.11530.353SM7/32 - 32 4.70 4.774 4.6142121.12850.587M27×1.525.5025.67625.3761-1/2-63434.2933.528SM15/64 -28 5.00 5.055 4.87524.524.65824.117M27×1.026.0026.15325.9171-3/4-539.539.82738.964SM1/4 - 24 5.20 5.266 5.08628.228.41827.877M28×2.026.0026.21025.835 2 -4-1/2

45.2

45.593

44.679

SM1/4 - 28 5.40 5.452 5.27230.6

30.93130.291M28×1.526.5026.67626.376SM1/4 - 40 5.60 5.726 5.59635.2

35.59238.952M28×1.027.0027.15326.917SM9/32 - 20 5.70 5.824 5.63439.229.59238.952M30×3.027.0027.25226.752SM9/32 - 28

6.20 6.256 6.0664545.48544.845M30×2.028.0028.2102

7.835最大

最小SM5/16 - 18 6.30 6.444 6.2545151.42850.788M30×1.528.5028.67628.376No.12-32 4.7 4.826 4.623SM5/16 - 24 6.80 6.864 6.674使用绞刀时

不用绞刀时57

57.29656.656

M30×1.029.0029.15328.9171/4 -32 5.6 5.69 5.486SM5/16 - 28 6.907.05 6.8601/16 -27 6.1 6.25 6.35M32×2.030.0030.21029.8355/16 -327.17.2647.087SM11/32 -287.707.8437.6531/8一278.338.438.74M32×1.5

30.50

30.676

30.376

3/8 -32

8.7

8.865

8.661

SM3/8 - 18

7.90

8.053

7.843

1/4一18

10.72

11.13

11.13

英 制 电 器 螺 纹W1 -8W1-1/8 -7W1-1/4 -7

螺丝攻牙钻孔径对照表

本表依据2级牙制定，由于钻头的形状，精度及被加工材质等对钻孔尺寸精度有很大影响，若有不当之处，应视实际状况适当变更钻头直径

PF 2-11

钻孔径

规格W1/8 -40W5/32 -32W3/16 -24W1/4 -20W5/16 -18W3/8 -16

W7/16 -14W1/2 -12

W9/16 -12W5/8 -11W3/4 -10W7/8 -9PF 1-11PF 11/8-11PF 11/2-11PF 13/4-11PF 3/8-19PF 1/2-14PF 5/8-14PF 3//4-14PF 7/8-14标准径PF 规格新规格G PF 1/16 - 28PF 1/8-28PF 1/4-19英制螺纹

不用绞刀时

有交牙部之长度

（最小）中之毋螺牙内径

公制细螺纹

美制粗牙螺纹规格（UNC)

规格

标准径

2级牙钻孔径

公制粗螺纹

标准径2级牙钻孔径

美制特细牙螺纹UNF PS 1/2 - 14PS 3/4 -14PS 1 - 11PS 1-1/4 - 11PS 1-1/2 - 11PS 规格

新规格Rp PS 1/16 - 28PS 1/8 - 28PS 1/4 - 19规格（UNFF)规格

标准径

2级牙钻孔径

公制迫牙丝攻钻孔径美制迫牙丝攻钻孔径标准径2级牙钻孔径N P T

N P S

2级牙钻孔径标准径规格（UNF)规格

标准径

美制管螺纹

钻孔径最大最小针车用螺纹美制特粗螺纹UNC

美制细牙螺纹

规格 （UNF)

标准径

2级牙钻孔径

PT 规格新规格Rc

标准长度（最小）中之毋螺牙内径使用绞刀时

PS 2 - 11

PS 3/8 - 19PF 11/4-11

英制管螺纹滚造径4.0-4.2规格2BA 3BA

3.0-3.2

2.7-2.82.4-2.5

4BA 5BA 6BA