全系列螺纹钻孔直径对照表
螺纹攻牙-钻孔直径对照表
36.00 36.271 35.814
公制迫牙丝攻钻孔径(挤压丝锥)
规格
精度等级
G1-G6 G7-G8
G9
M1.0*0.25
0.86 0.88 螺孔小径..
M1.1*0.25
0.96 0.98
..
M1.2*0.251.06源自1.08..M1.4*0.3
1.24 1.25
..
M1.6*0.35
1.41 1.43
M27*1.0
26.00 26.153 25.917
M18*2.5 15.50 15.744 15.294
M28*2.0
26.00 26.210 25.835
M20*2.5 17.50 17.744 17.294
M28*1.5
26.50 26.676 26.376
M22*2.5 19.50 19.744 19.294
M33*3.0
30.00 30.252 29.752
M1.1*0.2 0.90 0.921 0.883
M33*2.0
31.00 31.210 30.835
M1.2*0.2 1.00 1.021 0.983
M33*1.5
31.50 31.676 31.376
M1.4*0.2 1.20 1.221 1.183
M5.5*0.5 5.00 5.099 4.959 NO.6-40(3.505) 2.90 3.022 2.820
M6.0*0.75 5.30 5.378 5.188 NO.8-36(4.166) 3.50 3.606 3.404
M6.0*0.5 5.50 5.550 5.400 NO.10-32(4.826) 4.10 4.165 3.963
公制螺纹钻底孔用钻头直径尺寸表
公制螺纹钻底孔用钻头直径尺寸表M1:粗扣螺距0.25＝Φ0.75 细扣螺距0.2＝Φ0.8M2:粗扣螺距0.4＝Φ1.6 细扣螺距0.25＝Φ1.8M3:粗扣螺距0.5＝Φ2.5 细扣螺距0.35＝Φ2.7M4:粗扣螺距0.7＝Φ3.3 细扣螺距0.5＝Φ3.5M5:粗扣螺距0.8＝Φ4.2 细扣螺距0.5＝Φ4.5M6:粗扣螺距1.0＝Φ5.0 细扣螺距0.75＝Φ5.2M8:粗扣螺距1.25＝Φ6.7 细扣螺距1.0 , 0.75＝Φ7,Φ7.2M10:粗扣螺距1.5＝Φ8.5 细扣螺距1.25 , 1.0 , 0.75＝Φ8.7,Φ9,Φ9.2M12:粗扣螺距1.75＝Φ10.2 细扣螺距1.5 , 1.25 , 1.0＝Φ10.5,Φ10.7,Φ11 M14:粗扣螺距2.0＝Φ11.9 细扣螺距1.5 , 1.25 , 1.0＝Φ12.5,Φ12.7,Φ13 M16:粗扣螺距2.0＝Φ14 细扣螺距1.5 , 1.0＝Φ14.5,Φ15M18:粗扣螺距2.5＝Φ15.4 细扣螺距2.0 ,1.5 ,1.0＝Φ15.9,Φ16.5,Φ17M20:粗扣螺距2.5＝Φ17.4 细扣螺距2.0 , 1.5 , 1.0＝Φ17.9,Φ18.5,Φ19M22:粗扣螺距2.5＝Φ19.5 细扣螺距2.0 , 1.5 , 1.0＝Φ19.9,Φ20.5,Φ21M24:粗扣螺距3.0＝Φ20.9 细扣螺距2.0 , 1.5 , 1.0＝Φ21.9,Φ22.5,Φ23生产中钻螺纹底孔公式：t＜1mm: Dz=d-tt＞1mm: Dz=d-(1.04~1.06)t式中 t 螺距（毫米）Dz 攻丝前钻头直径（毫米）d 螺纹公称直径（毫米）公制螺纹钻底孔用钻头直径尺寸表公称直径d 螺距t 钻头直径公称直径d 螺距t 公称直径dM1 粗 0.25 =0.75 M2 粗 0.4 =1.6细 0.2 =0.8 细 0.25 =1.75M3 粗 0.5 =2.5 M4 粗 0.7= 3.3细 0.35 =2.65 细 0.5 =3.5M5 粗 0.8 =4.2 M6 粗 1.0 =5.0细 0.5 =4.5 细 0.75 =5.2M8 粗 1.25 =6.7 M10 粗 1.5 =8.5细 1.0 =7.0 细 1.25 =8.7细 0.75 =7.2 细 1.0 =9.0细 0.75 =9.2M12 粗 1.75 =10.2 M14 粗 2.0 =11.9细 1.5 =10.5 细 1.5 =12.5细 1.25 =10.7 细 1.25 =12.7细 1.0 =11.0 细 1.0 =13.0M16 粗 2.0 =13.9 M18 粗 2.5 =15.4 细 1.5 =14.5 细 2.0 =15.9 细 1.0 =15.0 细 1.5 =16.5 细 1.0 =17.0M20 粗 2.5 =17.4 M22 粗 2.5 =19.4 细 2.0 =17.9 细 2.0 =19.9 细 1.5 =18.5 细 1.5 =20.5 细 1.0 =19.0 细 1.0 =21.0M24 粗 3.0 =20.9 M27 粗 3.0 =23.9 细 2.0 =21.9 细 2.0 =24.9 细 1.5 =22.5 细 1.5 =25.5 细 1.0 =23.0 细 1.0 =26.0M30 粗 3.5 =26.3 M33 粗 3.5 =29.3 细 3.0 =26.9 细 3.0 =29.9 细 2.0 =27.9 细 2.0 =30.9 细 1.5 =28.5 细 1.5 =31.5 细 1.0 =29.0M36 粗 4.0 =31.8 M39 粗 4.0 =34.8 细 3.0 =32.9 细 3.0 =35.9 细 2.0 =33.9 细 2.0 =36.9 细 1.5 =34.5 细 1.5 =37.5M42 粗 4.5 =37.3 M45 粗 4.5 =40.3 细 4.0 =37.8 细 4.0 =40.8 细 3.0 =38.9 细 3.0 =41.9 细 2.0 =39.9 细 2.0 =42.9 细 1.5 =40.5 细 1.5 =43.5M48 粗 5.0 =42.7 M52 粗 5.0 =46.7 细 4.0 =43.8 细 4.0 =47.8 细 3.0 =44.9 细 3.0 =48.9 细 2.0 =45.9 细 2.0 =49.9 细 1.5 =46.5 细 1.5 =50.5欢迎您的下载，资料仅供参考！致力为企业和个人提供合同协议，策划案计划书，学习资料等等打造全网一站式需求。
各种螺纹详细参数和钻孔直径对照表
螺纹下孔径表公制粗牙螺纹JIS B 0209-1982(單位：mm)註(1)M1.4以下等級：5H、M1.6以上等級：6H(2)基於JIS B 0209-1982標準螺纹下孔径表公制細牙螺纹JIS B 0211-1982(單位：mm)螺纹下孔径表公制細牙螺纹JIS B 0211-1982(單位：mm)註(1)等級：6H(2)基於JIS B 0211-1982標準螺纹下孔径表美制粗牙螺纹(單位：mm)螺纹下孔径表美制細牙螺纹(單位：mm)螺纹下孔径表英制粗牙螺纹(單位：mm)螺纹下孔径表英制管用螺纹(單位：mm)螺纹下孔径表英制平行管用螺纹PF(G)(單位：mm)使用粗線左側數據作為攻絲前的底孔直径，可加工符合JIS B 0202的A級或B級的內螺纹小径。
美制斜行管用螺纹 (NPT?NPS)(單位：mm)上述钻头直径來源於美制管用螺纹ANSI／ASME B1.20.1—1983 Pipe Threads, General Purpose (Inch)標準。
螺纹下孔径表美制管用耐密斜行螺纹(NPTF?NPSF)(單位：mm)上述钻头直径來源於美制管用耐密斜行螺纹ANSI B1.20.3—1957 Dryseal Pipe Threads (Inch)標準。
螺纹下孔径表(無屑絲攻用)公制螺纹(NRT)(單位：mm)螺纹下孔径表(無屑絲攻用)美制粗牙螺纹(NRT)(單位：mm)螺纹下孔径表(無屑絲攻用)美制細牙螺纹(NRT)(單位：mm)英制管用平行螺纹(NRT)(單位：mm)螺纹下孔径表(無屑絲攻用)公制螺纹(HRT)(單位：mm)螺纹下孔径表(護套螺纹用)公制粗牙螺纹 HL-NRT(單位：mm)螺纹下孔径表(護套螺纹用)公制粗牙螺纹(單位：mm)公制細牙螺纹(單位：mm)螺纹下孔径表(護套螺纹用)美制粗牙螺纹(單位：mm)美制細牙螺纹(單位：mm)。
各种螺纹详细参数和钻孔直径对照表
螺纹下孔径表公制粗牙螺纹 JIS B 0209-1982(單位：mm)註(1)以下等級：5H、以上等級：6H(2)基於JIS B 0209-1982標準螺纹下孔径表螺纹下孔径表註(1)等級：6H(2)基於JIS B 0211-1982標準螺纹下孔径表美制粗牙螺纹 (單位：mm)螺纹下孔径表美制細牙螺纹 (單位：mm)螺纹下孔径表英制粗牙螺纹(單位：mm)螺纹下孔径表英制管用螺纹 (單位：mm)螺纹下孔径表美制斜行管用螺纹 (NPT‧NPS) (單位：mm)上述钻头直径來源於美制管用螺纹ANSI／ASME —1983 Pipe Threads, General Purpose (Inch)標準。
螺纹下孔径表美制管用耐密斜行螺纹(NPTF‧NPSF) (單位：mm)上述钻头直径來源於美制管用耐密斜行螺纹ANSI —1957 Dryseal Pipe Threads (Inch)標準。
螺纹下孔径表(無屑絲攻用)公制螺纹(NRT) (單位：mm)螺纹下孔径表(無屑絲攻用)美制粗牙螺纹(NRT) (單位：mm)螺纹下孔径表(無屑絲攻用)美制細牙螺纹(NRT) (單位：mm)英制管用平行螺纹(NRT) (單位：mm)螺纹下孔径表(無屑絲攻用)公制螺纹(HRT) (單位：mm)螺纹下孔径表(護套螺纹用)公制粗牙螺纹 HL-NRT (單位：mm)螺纹下孔径表(護套螺纹用)公制粗牙螺纹 (單位：mm)公制細牙螺纹 (單位：mm)螺纹下孔径表(護套螺纹用)美制粗牙螺纹 (單位：mm)各 種 換 算 表山數節距換算表管用螺絲基準寸法(mm)。
超全螺纹攻牙钻孔直径和滚造直径对照表,值得收藏!
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
39.50
39.827
38.964
2 -4-1/2
45.20
45.593
44.679
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
11.938
11.709
9/16 -28
13.20
13.386
13.132
5/8 -24
14.80
14.986
14.732
3/4 -20
17.80
17.958
17.678
7/8 -20
21.00
21.133
20.853
1 -20
24.00
24.308
24.028
美 制 粗 螺 纹
规格(UNC)
标准径
1.40
1.421
1.383
M1.7×0.2
1.45
1.500
1.460
M1.8×0.2
1.60
全系列螺纹钻孔直径对照表
螺纹钻孔直径对照表公制螺纹公制细牙螺纹55°圆柱内螺纹（Rp)55°圆锥内螺纹（Rc)55°非密封圆柱内螺纹（G)规格钻孔直径规格钻孔直径规格钻孔直径规格钻孔直径规格钻孔直径标准直径最大最小标准直径最大最小标准直径最大最小标准直径最大最小标准直径最大最小M10.750.7850.729M1*0.20.80.8210.7831/16-28 6.5 6.632 6.491/16-28 6.3 6.384 6.2441/16-28 6.7 6.843 6.561 M2 1.6 1.679 1.567M2*0.25 1.725 1.785 1.7291/8-288.58.6378.4951/8-288.38.3888.2491/8-288.78.8488.566 M3 2.5 2.599 2.459M3*0.35 2.7 2.721 2.6211/4-1911.411.54911.3411/4-191111.17410.9621/4-1911.711.8911.445 M4 3.3 3.422 3.242M4*0.5 3.5 3.599 3.4593/8-1914.915.04514.8463/8-1914.514.65814.4483/8-1915.215.39514.95 M5 4.2 4.334 4.134M5*0.5 4.5 4.599 4.4591/2-1418.618.77318.4891/2-1418.118.26317.9791/2-141919.17218.631 M65 5.153 4.917M6*0.75 5.3 5.378 5.1883/4-142424.25923.9753/4-1423.523.66323.3785/8-142121.12820.587 M76 6.153 5.917M7*0.75 6.3 6.378 6.1881-1130.230.47230.111-1129.629.82229.4593/4-1424.524.65824.117 M8 6.8 6.912 6.647M8*177.153 6.91711/4-1138.839.13338.77111/4-1138.238.33937.9767/8-1428.228.41827.877 M108.58.6768.376M8*0.757.37.3787.18811/2-1144.745.02644.66411/2-114444.23243.8691-1130.630.93130.291 M1210.2510.44110.106M10*1.258.88.9128.6472-1156.556.83756.4752-1155.655.84455.41211/8-1135.235.57934.939 M141212.2111.835M10*199.1538.91711/4-1139.239.59238.952 M161414.2113.835M10*0.759.39.3789.18811/2-114545.48544.845 M1815.515.74415.294M12*1.510.510.67610.37613/4-115151.42850.788 M2017.517.74417.294M12*1.2510.810.91210.6472-115757.29656.656 M2219.519.74419.294M12*11111.15310.917M242121.25220.752M14*1.512.512.67612.376M272424.25223.752M14*1.2512.812.91212.647M3026.526.77126.211M14*11313.15312.917M3329.529.77129.211M16*1.514.514.67614.376M363232.2731.67M16*11515.15314.917M393535.2734.67M18*21616.2115.835M18*1.516.516.67616.376M18*11717.15316.917M20*21818.2117.835M20*1.518.518.67618.376M20*11919.15318.917M22*22020.2119.835M22*1.520.520.67620.376M22*12121.15320.917M24*22222.2121.835M24*1.522.522.67622.376M24*12323.15322.917M27*22525.2124.835M27*1.525.525.67625.376M27*12626.15325.917M30*32727.25226.752M30*22828.2127.835M30*1.528.528.67628.376M30*12929.15328.917M33*33030.25229.752M33*23131.2130.835M33*1.531.531.67631.376M36*33333.25232.752M36*23434.2133.835M36*1.534.534.67634.376M39**33636.25235.752M39*23737.2136.835M39*1.537.537.67637.376螺纹钻孔直径对照表60°圆锥内螺纹（NPT)60°圆柱内螺纹（NPSC)统一螺纹（UNF）统一螺纹（UNC）统一螺纹（UNEF）规格钻孔直径规格钻孔直径规格钻孔直径规格钻孔直径规格钻孔直径标准直径最大最小标准直径最大最小标准直径最大最小标准直径最大最小标准直径最大最小1/16-27 6.135 6.223 6.0461/8-278.488.88.636N0.0-80 1.25 1.305 1.18N0.1-64 1.5 1.585 1.435N0.12-32 4.722 4.816 4.628 1/8-278.488.5688.3931/4-1811.3511.4711.227N0.1-72 1.55 1.612 1.473N0.2-56 1.78 1.872 1.6941/4-32 5.585 5.679 5.491 1/4-1810.99611.12810.8643/8-1814.7714.914.656N0.2-64 1.85 1.912 1.755N0.3-48 2.14 2.04 1.945/16-327.1727.2677.079 3/8-1814.41614.54814.2841/2-1417.81318.16117.642N0.3-56 2.1 2.197 2.024N0.4-40 2.27 2.385 2.1563/8-328.768.8548.666 1/2-1417.81317.98317.6423/4-1423.12723.49523.297N0.4-48 2.4 2.458 2.271N0.5-40 2.593 2.698 2.4877/16-2810.23710.34310.13 3/4-1423.12723.29722.9571-11.529.05929.48929.266N0.5-44 2.7 2.74 2.551N0.6-32 2.77 2.899 2.651/2-2811.82411.9311.717 1-11.529.05929.26628.85111/4-11.537.78438.25237.991N0.6-40 2.9 3.022 2.817N0.8-32 3.418 3.528 3.3079/16-2413.26513.38813.142 11/4-11.537.78437.99137.57611/2-11.543.8544.32344.06N0.8-36 3.5 3.606 3.401N0.10-24 3.814 3.949 3.685/8-2414.8514.97514.729 11/2-11.543.8544.0643.6462-11.555.8656.36356.07N0.10-32 4.1 4.165 3.967N0.12-24 4.46 4.59 4.3411/16-2416.4416.56316.317 2-11.555.8656.0755.659N0.12-28 4.6 4.724 4.5031/4-20 5.121 5.267 4.9753/4-2017.82117.96717.6751/4-28 5.5 5.588 5.3675/16-18 6.571 6.733 6.4113/16-2019.40919.55519.2635/16-24 6.97.035 6.7913/8-167.9798.1587.87/8-2020.99621.1420.853/8-248.58.6368.3797/16-149.359.559.14915/16-2022.58522.73122.4397/16-209.910.0339.7381/2-1310.79811.01310.5841-2024.17224.31824.0261/2-2011.511.60711.3269/16-1212.913.08112.76111/16-1825.62225.78425.4619/16-1812.913.08112.7615/8-1113.62213.86813.37611/8-1827.2127.37127.0495/8-1814.514.68114.3483/4-1016.56616.83216.29913/16-1828.79728.95928.6363/4-1617.517.67817.337/8-919.45819.74819.16911/4-1830.39430.55530.2337/8-1420.520.67520.261-822.2822.59821.96315/16-1831.9732.13331.811-1223.323.57123.10911/8-724.99825.34924.64813/8-1833.55933.7233.39811/8-1226.526.74626.28411/4-728.17328.52427.82317/16-1835.0735.23334.9111/4-1229.629.92129.45913/8-632.831.1230.34311/2-1836.73436.89636.57313/8-1232.833.09632.63411/2-633.90734.29533.51819/16-1838.1238.48338.1611/2-353636.27135.80913/4-539.3839.8138.9515/8-1839.90940.0739.7482-41/245.14445.59844.689111/16-1841.49741.65841.336。
螺纹孔径对照表
标准径
0.80 0.90 1.00 1.20 1.40 1.45 1.60 1.75 1.95 2.05 2.20 2.20 2.70 3.20 3.50 4.00 4.50 5.00 5.30 5.50 6.30 6.50 7.00 7.30 7.50 8.00 8.30 8.80 9.00 9.30 9.50 10.00 10.30 10.50 10.80
美制细螺纹
规格 (UNF)
标准径
(螺丝牙外径)
No.08N0o(.11.-524) 7N2o(.12.-854) 6N4o(.23.-184) 5N6o(.24.-515) 4N8o(.25.-845) 4N4o(.36.-175) 4N0o(.38.-505) 3N6o(.41.01-66) 3N2o(.41.28-26) 218/(45.84-6) 258/16 234/8 274/16 210/2 290/16 158/8 138/4 176/8 114 112-1/8 112-1/4 112-3/8 112-1/2 12
1.25 1.55 1.85 2.10 2.40 2.70 2.90 3.50 4.10 4.60 5.50 6.90 8.50 9.90 11.50 12.90 14.50 17.50 20.50 23.20 26.50 29.50 32.80 36.0
2级牙钻孔径 最大 最小
1.305 1.182 1.612 1.474 1.912 1.756 2.197 2.025 2.458 2.271 2.740 2.551 3.022 2.820 3.606 3.404 4.165 3.963 4.724 4.496 5.588 5.360 7.035 6.782 8.636 8.382 10.033 9.729 11.607 11.329 13.081 12.751 14.681 14.351 17.678 17.323 20.675 20.270 23.571 23.114 26.746 26.289 29.921 29.464 33.096 32.639 36.271 35.814
螺丝攻牙钻孔径和滚丝径对照表
螺丝攻牙钻孔径和滚丝径对照表螺丝攻牙钻孔径和滚丝径对照表公制粗螺纹美制粗螺纹规格标准径2级牙钻孔径规格（UNC）标准径2级牙钻孔径最大最小最大最小M1.0×0.25 0.75 0.785 0.729NO.1-64(1.854) 1.55 1.582 1.425M1.1×0.25 0.85 0.885 0.829NO.2-56(2.184) 1.80 1.871 1.695M1.2×0.25 0.95 0.985 0.985NO.3-48(2.515) 2.10 2.146 1.941M1.4×0.3 1.10 1.142 1.075NO.4-40(2.845) 2.30 2.385 2.157M1.6×0.35 1.25 1.321 1.221NO.5-40(3.175) 2.60 2.697 2.487M1.7×0.35 1.35 1.421 1.321NO.6-32(3.505) 2.80 2.895 2.642M1.8×0.35 1.45 1.521 1.421NO8-32(4.166) 3.40 3.53 3.302M2.0×0.4 1.60 1.679 1.567NO.10-24(4.826) 3.90 3.962 3.683M2.2×0.45 1.75 1.838 1.713NO.12-24(5.486) 4.50 4.597 4.344M2.3×0.4 1.90 1.979 1.867 1/4-20 5.10 5.257 4.979M2.5×0.45 2.10 2.138 2.013 5/16-18 6.60 6.731 6.401M2.6×0.45 2.20 2.238 2.113 3/8-16 8.00 8.153 7.798M3.0×0.5 2.50 2.599 2.459 7/16-14 9.40 9.55 9.144M3.0×0.6 2.40 2.440 2.280 1/2-13 10.80 11.023 10.592M3.5×0.6 2.90 3.010 2.850 9/16-12 12.20 12.446 11.989M4.0×0.7 3.30 3.422 3.242 5/8-11 13.60 12.868 13.386M4.0×0.75 3.25 3.326 3.106 3/4-10 16.50 18.840 16.307M4.5×0.75 3.80 3.878 3.688 7/8-9 19.50 19.761 19.177M5.0×0.8 4.20 4.334 4.134 1 22.2022.606 21.971M5.0×0.9 4.10 4.170 3.930 1-1/8-7 25.00 25.349 24.638M6.0×1.0 5.00 5.153 4.917 1-1/4-7 28.20 28.524 27.813M7.0×1.0 6.00 6.153 5.917 1-3/8-6 30.80 31.115 30.353M8.0×1.25 6.80 6.912 6.647 1-1/2-6 34.00 34.290 33.528M9.0×1.25 7.80 7.912 7.647 1-3/4-5 39.50 39.827 38.964M10×1.5 8.50 8.676 8.376 2-4-1/2 45.20 45.593 44.679M11×1.5 9.50 9.676 9.376M12×1.75 10.30 10.441 10.106M14×2.0 12.00 12.210 11.835M16×2.0 14.00 14.210 13.835M18×2.5 15.50 15.744 15.294M20×2.5 17.50 17.744 17.294M22×2.5 19.50 19.744 19.294M24×3.0 21.00 21.252 20.752M27×3.0 24.00 24.252 23.752M30×3.5 26.50 26.771 26.211螺丝攻牙钻孔径和滚丝径对照表公制细螺纹美制细螺纹规格标准径2级牙钻孔径规格（UNC）标准径2级牙钻孔径最大最小最大最小M1.0×0.2 0.80 0.821 0.783 NO.0-80(1.524) 1.25 1.305 1.182M1.1×0.2 0.90 0.921 0.883 NO.1-72(1.854) 1.55 1.612 1.474M1.2×0.2 1.00 1.021 0.983 NO.2-64(2.184) 1.85 1.912 1.756M1.4×0.2 1.20 1.221 1.183 NO.3-56(2.515) 2.10 2.197 2.025M1.6×0.2 1.40 1.421 1.383 NO.4-48(2.845) 2.40 2.458 2.271M1.7×0.2 1.45 1.500 1.460NO.5-44(3.175) 2.70 2.740 2.551M1.8×0.2 1.60 1.621 1.583NO.6-40(3.505) 2.90 3.022 2.820M2.0×0.25 1.75 1.785 1.729NO.8-36(4.166) 3.50 3.606 3.404M2.2×0.25 1.95 1.985 1.929NO.10-32(4.826) 4.10 4.165 3.963M2.3×0.25 2.05 2.061 2.001NO.12-28(5.846) 4.60 4.724 4.496M2.5×0.35 2.20 2.221 2.121 1/4-28 5.50 5.588 5.360M2.6×0.35 2.20 2.246 2.186 5/16-24 6.90 7.035 6.782M3.0×0.35 2.70 2.721 2.621 3/8-24 8.50 8.636 8.382M3.5×0.35 3.20 3.221 3.121 7/16-20 9.90 10.033 9.729M4.0×0.5 3.50 3.599 3.459 1/2-20 11.50 11.607 11.329M4.5×0.5 4.00 4.099 3.959 9/16-18 12.90 13.081 12.751M5.0×0.5 4.50 4.599 4.459 5/8-18 14.50 14.681 14.351M5.5×0.5 5.00 5.099 4.959 3/4-16 17.50 17.678 17.323M6.0×0.75 5.30 5.378 5.188 7/8-14 20.50 20.675 20.270M6.0×0.5 5.50 5.550 5.400 1-12 23.20 23.571 23.114M7.0×0.75 6.30 6.378 6.188 1-1/8-12 26.50 26.746 26.289M7.0×0.5 6.50 6.550 6.400 1-1/4-1229.50 29.921 29.464M8.0×1.0 7.00 7.153 6.917 1-3/8-12 32.80 33.096 32.639M8.0×0.75 7.30 7.378 7.188 1-1/2-12 36.00 36.271 35.814M8.0×0.5 7.50 7.520 7.400M9.0×1.0 8.00 8.153 7.917M9.0×0.75 8.30 8.378 8.188M10×1.25 8.80 8.912 8.647M10×1.0 9.00 9.153 8.917M10×0.75 9.30 9.378 9.188M10×0.5 9.50 9.520 9.400M11×1.0 10.00 10.153 9.917M11×0.75 10.30 10.378 10.188M12×1.5 10.50 10.676 10.376M12×1.25 10.80 10.912 10.647M12×0.5 11.50 11.520 11.400 M14×1.5 12.50 12.676 12.376 M14×1.0 13.00 13.153 12.917 M15×1.5 13.50 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 16.676 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 M22×2.0 20.00 20.210 19.835 M22×1.5 20.50 20.676 20.376 M22×1.0 21.00 21.153 20.917M24×1.5 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 30.376M33×3.0 30.00 30.252 29.752M33×2.0 31.00 31.210 30.835M33×1.5 31.50 31.676 31.376M35×1.5 33.50 33.676 33.376M36×3.0 33.00 33.252 32.752M36×2.0 34.00 34.210 33.835M36×1.5 34.50 34.676 34.376螺丝攻牙钻孔径和滚丝径对照表公制挤压丝攻钻孔径美制挤压丝攻钻孔径规格精度等级规格（UNC）精度等级G4-G6 G7-G8 G9 G4-G6 G7-G8 G9M1.0×0.25 0.86 0.88 －NO.2-56UNC 1.94 －－M1.1×0.25 0.96 0.98 －NO.3-48 2.23 －－M1.2×0.25 1.06 1.08 －NO.4-40 2.50 －－M1.4×0.3 1.24 1.25 －NO.5-40 2.83 －－M1.6×0.35 1.41 1.43 －NO.6-32 3.07 －－－M1.8×0.35 1.61 1.63 －NO.10-24 4.24 4.3 －M2.0×0.4 1.78 1.80 －NO.12-24 4.90 4.96 －M2.2×0.45 1.95 1.98 －1/4-20 －5.72 －M2.3×0.4 2.08 2.10 －5/16-18 －7.24 －M2.5×0.45 2.25 2.28 －3/8-16 －8.74 8.81 M2.6×0.45 2.35 2.38 －7/16-14 －10.20 10.30M3.0×0.5 2.73 2.75 －1/2-13 －11.27 11.82M3.5×0.6 3.17 3.20 －NO.2-64UNF 1.97－－M4.0×0.7 3.62 3.65 3.69 NO.3-56 2.27 －－M5.0×0.8 4.56 4.60 4.64 NO.4-48 2.56 －－－M7.0×1.0 6.45 6.50 6.55 NO.6-40 3.16 －－M8.0×1.25 7.31 7.38 7.44 NO.8-36 3.78 －－M10×1.5 9.18 9.25 9.32 NO.10-32 4.394.43 －M10×1.25 9.31 9.38 9.44 NO.12-28 4.99 5.04 －M12×1.75 11.04 11.12 11.21 1/4-28 5.85 5.90 －M12×1.25 11.31 11.38 11.44 5/16-24 7.36 7.41 －3/8-24 －9.00 －7/16-20 －10.48 10.541/2-20 －12.07 12.13美制特细螺纹英制电器螺纹规格标准径2级牙钻孔径规格钻孔径最大最小NO.12-32 4.70 4.826 4.623 2BA 4.0-4.2 1/4 -32 5.60 5.690 5.486 3BA5/16 -32 7.10 7.264 7.087 4BA 3.0-3.2 3/8 -32 8.70 8.865 8.661 5BA 2.7-2.8 7/16 -28 10.20 10.338 10.135 6BA 2.4-2.51/2 -28 11.80 11.938 11.7099/16 -24 13.20 13.386 13.1325/8 -24 14.80 14.986 14.7323/4 -20 17.80 17.958 17.6787/8 -20 21.00 21.133 20.8531 -20 24.00 24.308 24.028螺丝攻牙钻孔径和滚丝径对照表英制螺纹公制螺纹针车用螺纹规格(UNEF) 钻孔径规格滚丝径规格滚丝径硬材软材W 1/8 - 40 2.65 2.60 M3×0.5 2.63-2.60SM1/8-40 2.735-2.688W 5/32 - 32 3.25 3.20 M3.0×0.6 2.56-2.53 SM1/8-44 2.769-2.722W 3/16 - 24 3.75 3.70 M3.5×0.6 3.06-3.03 SM9/64-40 3.128-3.083W 1/4 - 20 5.10 5.00 M4.0×0.7 3.49-3.45 SM11/64-40 3.855-3.805W 5/16 - 18 6.60 6.50 M4.0×0.75 3.45-3.41 SM3/16-32 4.205-4.155W 3/8 - 16 8.00 7.90 M4.5×0.75 3.96-3.92 SM3/16-28 4.143-4.093W 7/16 - 14 9.40 9.30 M5.0×0.8 4.43-4.38 SM7/32-32 5.003-4.955W 1/2 - 12 10.70 10.50 M5.0×0.9 4.36-4.31 SM15/64-28 5.325-5.570W 9/16 - 12 12.30 12.00 M6.0×1.05.30-5.25 SM1/4-40 5.890-5.735W 5/8 - 11 13.70 13.50 M7.0×1.0 6.30-6.25 SM1/4-28 5.721-5.366W 3/4 - 10 16.70 16.50 M8.0×1.0 7.28-7.23 SM9/32-28 6.508-6.648W 7/8 - 9 19.50 19.30 M8.0×1.25 7.12-7.07 SM11/32-28 8.092-8.432W1 - 8 22.40 22.00 SM3/8-288.880-8.015W 1-1/8 - 7 25.00 24.80 SM7/16-28 10.466-10.401W 1 - 1/4 - 7 28.30 28.00 SM7/16-16 10.037-9.967SM1/2-20 11.819-11.749SM9/26-20 13.400-13.425英制管螺纹英制管螺纹美制管螺纹规格标准径钻孔径规格标准径有交牙部之长度（最小）中之毋螺牙内径标准长度（最小）中之毋螺牙内径规格钻孔径最大最小使用绞刀时不用绞刀时NPT NPS 使用绞刀时不用绞刀时PS 1/16 - 28 6.50 6.632 6.490 PT 1/16 - 28 6.10 6.20 6.244 6.384 1/16 - 27 6.10 6.25 6.35PS 1/8 - 28 8.50 8.637 8.495 PT 1/8 - 28 8.10 8.20 8.249 8.388 1/8 - 27 8.33 8.43 8.74PS 1/4 - 19 11.40 11.549 11.341 PT 1/4 - 19 10.70 11.00 10.962 11.174 1/4 - 18 10.72 11.13 11.13PS 3/8 - 19 15.00 15.054 14.846 PT 3/8 - 19 14.20 14.50 14.448 14.658 3/8 - 18 14.27 14.27 14.68PS 1/2 - 14 18.50 18.773 18.489 PT 1/2 - 14 17.60 18.00 17.979 18.263 1/2 - 14 17.48 17.86 18.26PS 3/4 -14 24.00 24.259 23.975 PT 3/4 - 14 23.00 23.50 23.378 23.663 3/4 - 14 22.63 23.01 23.42PS 1 - 11 30.20 30.471 30.111 PT 1- 11 29.00 29.50 29.459 29.822 1 - 11-1/2 28.58 28.98 29.36PS 1-1/4 - 11 38.80 39.132 38.772 PT 1-1/4 - 11 37.50 38.00 37.976 38.3391-1/4-11-1/2 37.31 37.69 38.10PS 1-1/2 - 11 44.80 45.025 44.665 PT 1-1/2 - 11 43.40 44.00 43.869 44.2321-1/2-11-1/2 43.66 44.04 44.45PS 2 - 11 56.50 56.836 56.476 PT 2 - 11 54.90 55.50 55.412 55.844 2 - 11 - 1/2 55.58 55.96 56.36。
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螺纹钻孔直径对照表公制螺纹公制细牙螺纹55°圆柱内螺纹（Rp)55°圆锥内螺纹（Rc)55°非密封圆柱内螺纹（G)规格钻孔直径规格钻孔直径规格钻孔直径规格钻孔直径规格钻孔直径标准直径最大最小标准直径最大最小标准直径最大最小标准直径最大最小标准直径最大最小M10.750.7850.729M1*0.20.80.8210.7831/16-28 6.5 6.632 6.491/16-28 6.3 6.384 6.2441/16-28 6.7 6.843 6.561 M2 1.6 1.679 1.567M2*0.25 1.725 1.785 1.7291/8-288.58.6378.4951/8-288.38.3888.2491/8-288.78.8488.566 M3 2.5 2.599 2.459M3*0.35 2.7 2.721 2.6211/4-1911.411.54911.3411/4-191111.17410.9621/4-1911.711.8911.445 M4 3.3 3.422 3.242M4*0.5 3.5 3.599 3.4593/8-1914.915.04514.8463/8-1914.514.65814.4483/8-1915.215.39514.95 M5 4.2 4.334 4.134M5*0.5 4.5 4.599 4.4591/2-1418.618.77318.4891/2-1418.118.26317.9791/2-141919.17218.631 M65 5.153 4.917M6*0.75 5.3 5.378 5.1883/4-142424.25923.9753/4-1423.523.66323.3785/8-142121.12820.587 M76 6.153 5.917M7*0.75 6.3 6.378 6.1881-1130.230.47230.111-1129.629.82229.4593/4-1424.524.65824.117 M8 6.8 6.912 6.647M8*177.153 6.91711/4-1138.839.13338.77111/4-1138.238.33937.9767/8-1428.228.41827.877 M108.58.6768.376M8*0.757.37.3787.18811/2-1144.745.02644.66411/2-114444.23243.8691-1130.630.93130.291 M1210.2510.44110.106M10*1.258.88.9128.6472-1156.556.83756.4752-1155.655.84455.41211/8-1135.235.57934.939 M141212.2111.835M10*199.1538.91711/4-1139.239.59238.952 M161414.2113.835M10*0.759.39.3789.18811/2-114545.48544.845 M1815.515.74415.294M12*1.510.510.67610.37613/4-115151.42850.788 M2017.517.74417.294M12*1.2510.810.91210.6472-115757.29656.656 M2219.519.74419.294M12*11111.15310.917M242121.25220.752M14*1.512.512.67612.376M272424.25223.752M14*1.2512.812.91212.647M3026.526.77126.211M14*11313.15312.917M3329.529.77129.211M16*1.514.514.67614.376M363232.2731.67M16*11515.15314.917M393535.2734.67M18*21616.2115.835M18*1.516.516.67616.376M18*11717.15316.917M20*21818.2117.835M20*1.518.518.67618.376M20*11919.15318.917M22*22020.2119.835M22*1.520.520.67620.376M22*12121.15320.917M24*22222.2121.835M24*1.522.522.67622.376M24*12323.15322.917M27*22525.2124.835M27*1.525.525.67625.376M27*12626.15325.917M30*32727.25226.752M30*22828.2127.835M30*1.528.528.67628.376M30*12929.15328.917M33*33030.25229.752M33*23131.2130.835M33*1.531.531.67631.376M36*33333.25232.752M36*23434.2133.835M36*1.534.534.67634.376M39**33636.25235.752M39*23737.2136.835M39*1.537.537.67637.376螺纹钻孔直径对照表60°圆锥内螺纹（NPT)60°圆柱内螺纹（NPSC)统一螺纹（UNF）统一螺纹（UNC）统一螺纹（UNEF）规格钻孔直径规格钻孔直径规格钻孔直径规格钻孔直径规格钻孔直径标准直径最大最小标准直径最大最小标准直径最大最小标准直径最大最小标准直径最大最小1/16-27 6.135 6.223 6.0461/8-278.488.88.636N0.0-80 1.25 1.305 1.18N0.1-64 1.5 1.585 1.435N0.12-32 4.722 4.816 4.628 1/8-278.488.5688.3931/4-1811.3511.4711.227N0.1-72 1.55 1.612 1.473N0.2-56 1.78 1.872 1.6941/4-32 5.585 5.679 5.491 1/4-1810.99611.12810.8643/8-1814.7714.914.656N0.2-64 1.85 1.912 1.755N0.3-48 2.14 2.04 1.945/16-327.1727.2677.079 3/8-1814.41614.54814.2841/2-1417.81318.16117.642N0.3-56 2.1 2.197 2.024N0.4-40 2.27 2.385 2.1563/8-328.768.8548.666 1/2-1417.81317.98317.6423/4-1423.12723.49523.297N0.4-48 2.4 2.458 2.271N0.5-40 2.593 2.698 2.4877/16-2810.23710.34310.13 3/4-1423.12723.29722.9571-11.529.05929.48929.266N0.5-44 2.7 2.74 2.551N0.6-32 2.77 2.899 2.651/2-2811.82411.9311.717 1-11.529.05929.26628.85111/4-11.537.78438.25237.991N0.6-40 2.9 3.022 2.817N0.8-32 3.418 3.528 3.3079/16-2413.26513.38813.142 11/4-11.537.78437.99137.57611/2-11.543.8544.32344.06N0.8-36 3.5 3.606 3.401N0.10-24 3.814 3.949 3.685/8-2414.8514.97514.729 11/2-11.543.8544.0643.6462-11.555.8656.36356.07N0.10-32 4.1 4.165 3.967N0.12-24 4.46 4.59 4.3411/16-2416.4416.56316.317 2-11.555.8656.0755.659N0.12-28 4.6 4.724 4.5031/4-20 5.121 5.267 4.9753/4-2017.82117.96717.6751/4-28 5.5 5.588 5.3675/16-18 6.571 6.733 6.4113/16-2019.40919.55519.2635/16-24 6.97.035 6.7913/8-167.9798.1587.87/8-2020.99621.1420.853/8-248.58.6368.3797/16-149.359.559.14915/16-2022.58522.73122.4397/16-209.910.0339.7381/2-1310.79811.01310.5841-2024.17224.31824.0261/2-2011.511.60711.3269/16-1212.913.08112.76111/16-1825.62225.78425.4619/16-1812.913.08112.7615/8-1113.62213.86813.37611/8-1827.2127.37127.0495/8-1814.514.68114.3483/4-1016.56616.83216.29913/16-1828.79728.95928.6363/4-1617.517.67817.337/8-919.45819.74819.16911/4-1830.39430.55530.2337/8-1420.520.67520.261-822.2822.59821.96315/16-1831.9732.13331.811-1223.323.57123.10911/8-724.99825.34924.64813/8-1833.55933.7233.39811/8-1226.526.74626.28411/4-728.17328.52427.82317/16-1835.0735.23334.9111/4-1229.629.92129.45913/8-632.831.1230.34311/2-1836.73436.89636.57313/8-1232.833.09632.63411/2-633.90734.29533.51819/16-1838.1238.48338.1611/2-353636.27135.80913/4-539.3839.8138.9515/8-1839.90940.0739.7482-41/245.14445.59844.689111/16-1841.49741.65841.336。