螺纹钻孔直径对照表讲课稿.xls

螺螺纹纹钻钻孔孔直直径径对对照照表表公公制制螺螺纹纹公公制制细细牙牙螺螺纹纹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M10.750.7850.729 M1*0.20.80.8210.783M21.61.6791.567 M2*0.251.7251.7851.729M32.52.5992.459 M3*0.352.72.7212.621M43.33.4223.242 M4*0.53.53.5993.459M54.24.3344.134 M5*0.54.54.5994.459M655.1534.917 M6*0.755.35.3785.188M766.1535.917 M7*0.756.36.3786.188M86.86.9126.647 M8*177.1536.917M108.58.6768.376 M8*0.757.37.3787.188M1210.2510.44110.106 M10*1.258.88.9128.647M141212.2111.835 M10*199.1538.917M161414.2113.835 M10*0.759.39.3789.188M1815.515.74415.294 M12*1.510.510.67610.376M2017.517.74417.294 M12*1.2510.810.91210.647M2219.519.74419.294 M12*11111.15310.917M242121.25220.752 M14*1.512.512.67612.376M272424.25223.752 M14*1.2512.812.91212.647M3026.526.77126.211 M14*11313.15312.917M3329.529.77129.211 M16*1.514.514.67614.376M363232.2731.67 M16*11515.15314.917M393535.2734.67 M18*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*1.537.537.67637.37655圆圆柱柱内内螺螺纹纹（Rp)Rp)55圆圆锥锥内内螺螺纹纹（Rc)Rc)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1/16 -286.56.6326.49 1/16 -286.36.3846.2441/8 -288.58.6378.495 1/8 -288.38.3888.2491/4 -1911.411.54911.341 1/4 -191111.17410.9623/8 -1914.915.04514.846 3/8 -1914.514.65814.4481/2 -1418.618.77318.489 1/2 -1418.118.26317.9793/4 -142424.25923.975 3/4 -1423.523.66323.3781 -1130.230.47230.11 1 -1129.629.82229.4591 1/4-1138.839.13338.771 1 1/4-1138.238.33937.9761 1/2-1144.745.02644.664 1 1/2-114444.23243.8692 -1156.556.83756.475 2 -1155.655.84455.41255非非密密封封圆圆柱柱内内螺螺纹纹（G)G)60圆圆锥锥内内螺螺纹纹（NPT)NPT)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1/16 -286.76.8436.561 1/16 -276.1356.2236.0461/8 -288.78.8488.566 1/8 -278.488.5688.3931/4 -1911.711.8911.445 1/4 -1810.99611.12810.8643/8 -1915.215.39514.95 3/8 -1814.41614.28414.5481/2 -141919.17218.631 1/2 -1417.81317.64217.9835/8 -142121.12820.587 3/4 -1423.12723.29722.9573/4 -1424.524.65824.117 1 -11.529.05929.26628.8517/8 -1428.228.41827.877 1 1/4-11.537.78437.99137.5761 -1130.630.93130.291 1 1/2-11.543.8544.0643.6461 1/8-1135.235.57934.939 2 -11.555.8656.0755.6591 1/4-1139.239.59238.9521 1/2-114545.48544.8451 3/4-115151.42850.7882 -115757.29656.656螺螺纹纹钻钻孔孔直直径径对对照照表表60圆圆柱柱内内螺螺纹纹（NPSC)NPSC)统统一一螺螺纹纹（UNFUNF）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1/8 -278.488.88.636 N0.0 -801.251.3051.181/4 -1811.3511.4711.227 N0.1 -721.551.6121.4733/8 -1814.7714.914.656 N0.2 -641.851.9121.7551/2 -1417.81317.64218.161 N0.3 -562.12.1972.0243/4 -1423.12723.29723.495 N0.4 -482.42.4582.2711 -11.529.05929.26629.489 N0.5 -442.72.742.5511 1/4-11.537.78437.99138.252 N0.6 -402.93.0222.8171 1/2-11.543.8544.0644.323 N0.8 -363.53.6063.4012 -11.555.8656.0756.363 N0.10-324.14.1653.967N0.12-284.64.7244.5031/4 -285.55.5885.3675/16 -246.97.0356.7913/8 -248.58.6368.3797/16 -209.910.0339.7381/2 -2011.511.60711.3269/16 -1812.913.08112.7615/8 -1814.514.68114.3483/4 -1617.517.67817.337/8 -1420.520.67520.261 -1223.323.57123.1091 1/8-1226.526.74626.2841 1/4-1229.629.92129.4591 3/8-1232.833.09632.6341 1/2-353636.27135.809统统一一螺螺纹纹（UNCUNC）统统一一螺螺纹纹（UNEFUNEF）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N0.1 -641.51.5851.435 N0.12-324.7224.8164.628N0.2 -561.781.8721.694 1/4 -325.5855.6795.491N0.3 -482.142.041.94 5/16 -327.1727.2677.079N0.4 -402.272.3852.156 3/8 -328.768.8548.666N0.5 -402.5932.6982.487 7/16 -2810.23710.34310.13N0.6 -322.772.8992.65 1/2 -2811.82411.9311.717N0.8 -323.4183.5283.307 9/16 -2413.26513.38813.142N0.10-243.8143.9493.68 5/8 -2414.8514.97514.729N0.12-244.464.594.34 11/16-2416.4416.56316.3171/4 -205.1215.2674.975 3/4 -2017.82117.96717.6755/16 -186.5716.7336.41 13/16-2019.40919.55519.2633/8 -167.9798.1587.8 7/8 -2020.99621.1420.857/16 -149.359.559.149 15/16-2022.58522.73122.4391/2 -1310.79811.01310.584 1 -2024.17224.31824.0269/16 -1212.913.08112.761 1 1/16-1825.62225.78425.4615/8 -1113.62213.86813.376 1 1/8-1827.2127.37127.0493/4 -1016.56616.83216.299 1 3/16-1828.79728.95928.6367/8 -919.45819.74819.169 1 1/4-1830.39430.55530.2331 -822.2822.59821.963 1 5/16-1831.9732.13331.811 1/8-724.99825.34924.648 1 3/8-1833.55933.7233.3981 1/4-728.17328.52427.823 1 7/16-1835.0735.23334.911 3/8-632.831.1230.343 1 1/2-1836.73436.89636.5731 1/2-633.90734.29533.518 1 9/16-1838.1238.48338.161 3/4-539.3839.8138.95 1 5/8-1839.90940.0739.7482 -4 1/245.14445.59844.689 1 11/16-1841.49741.65841.336