螺纹规格符号含义

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1、螺纹规格公制细螺纹公制标准螺纹规格标准径2 级螺纹内径规格标准径1 级-2 级螺纹内径上限下限上限下限M1*0.250.750.7850.729M1*0.200.80.8210.783M1.1*0.250.850.8850.829M1.1*0.200.90.9210.883M1.2*.250.950.9850.929M1.2*0.2011.0210.983M1.4*0.31.11.1421.075M1.4*0.201.21.2211.183M1.6*0.351.251.3211.221M1.6*0.201.41.4211.383M1.7*0.351.351.4211.321*M1.7*0.20

2、1.451.51.46M1.8*0.351.451.5211.421M1.8*0.201.61.6211.583M2*0.41.61.6791.576M2*0.251.751.7851.729M2.2*0.451.751.8381.713M2.2*0.251.951.9851.929M2.3*0.41.91.9791.867*M2.3*0.252.052.0162.001M2.5*0.452.12.1382.013M2.5*0.352.1212.2212.121M2.6*0.452.22.2382.113*M2.6*0.352.22.2462.186M3*0.52.52.5992.459M3*

3、0.352.72.7212.621*M3*0.62.42.442.28M3.5*0.353.23.2213.121M3.5*0.62.93.012.85M4*0.503.53.5993.459M4*0.73.33.4223.242M4.5*0.5044.0993.959*M4*0.753.253.3263.106M5*0.504.54.5994.459M4.5*0.753.83.8783.688M5.5*0.5055.0994.959M5*0.84.24.3344.134M6*0.755.35.3785.188*M5*0.94.14.173.93*M6*0.55.55.555.4M6*155.

4、1534.917M7*0.756.36.3786.188M7*166.1535.917*M7*0.506.56.556.4M8*1.256.86.9126.647M8*1.077.1536.917M9*1.257.87.9127.647M8*0.757.37.3787.188M10*1.58.58.6768.376*M8*0.507.57.527.4M11*1.59.59.6769.376M9*1.088.1537.917M12*1.7510.310.44110.106M9*0.758.38.3788.188M14*21212.2111.835M10*1.258.88.9128.647M16*

5、21414.2113.835M18*2.515.515.74415.249M20*2.517.517.74417.249M22*2.519.519.74419.249M24*32121.25220.752M27*32424.25223.752M30*3.526.526.77126.211M33*3.529.529.77129.211M36*43232.2731.67M39*43535.2734.67M42*4.537.537.77937.129M45*4.540.540.77940.129M48*54343.27942.587附* 号螺纹自学968 年3 月删除公制细螺纹规格标准径2 级螺纹内

6、径规格标准径1 级-2 级螺纹内径上限下限上限下限M10*199.1538.917M32*1.5030.530.67630.376M10*0.759.39.3789.188M33*33030.25229.752*M10*0.59.59.529.4M33*23131.2130.835M11*11010.1539.917M33*1.5031.531.67631.376M11*0.7510.310.37810.188M35*1.5033.533.67633.376M12*1.510.510.67610.376M36*3.03333.25232.752M12*1.2510.810.91210.647M

7、36*2.03434.2133.835M12*11111.15310.917M36*1.5034.534.67634.376*M12*0.511.511.5211.4M38*1.5036.536.67636.376M14*1.512.512.67612.376M39*33636.25235.752M14*1.01313.15312.917M39*23737.2136.835M15*1.513.513.67613.376M39*1.5037.537.67637.376M15*1.01414.15313.917M40*33737.25236.752M16*1.5014.514.67613.917M

8、40*23838.2137.835M16*1.01515.15314.376M40*1.5038.538.67638.376M17*1.5015.515.67614.917M42*43838.2737.67M17*1.01616.15315.376M42*33939.25238.752M18*2.01616.2115.835M42*24040.2139.835M18*1.5016.516.67616.376M42*1.5040.540.67640.376M18*1.01717.15316.917M45*44141.2740.67M20*2.01818.2117.835M45*34242.252

9、41.752M20*1.5018.518.67618.376M45*24343.2142.835M20*1.01919.15318.917M45*1.5043.543.67643.376M22*22020.2119.835M48*44444.2743.67M22*1.5020.520.67620.376M48*34545.25244.752M22*1.02121.15320.917M48*24646.2145.835M24*2.02222.2121.835M48*1.5046.546.67646.376M24*1.5022.522.67622.376M50*34747.252M24*1.023

10、23.15322.917M50*24848.2147.835M25*2.02323.2122.835M50*1.5048.548.67648.376M25*1.5023.523.67623.376M25*1.02424.15323.917M26*1.5024.524.67624.376M27*2.02525.2124.835M27*1.5025.525.67625.376M27*1.02626.15325.917M28*2.02626.2125.835M28*1.5026.526.67626.373M28*1.02727.15326.917M30*3.02727.25226.752M30*2.

11、02828.2127.835M30*1.5028.528.67628.376M30*1.02929.15328.917M32*2.03030.2129.835附* 号螺纹自学968 年3 月删除惠式螺纹（旧英制牙）山数节距换算表规格钻头径A 例B例山数(25.4)节数*W18-402.652.61000.254*W532-323.253.28800.3175*w316-243.753.77720.3518W14-205.15640.3969W516-186.65600.4233W38-1686.5560.4536W716-149.47.9480.5292W12-1210.79.310.5440

12、.5773W916-1212.312400.635W58-1113.713.5360.7056W34-1016.716.5320.7938W78-919.519.3280.9071W1-822.422241.0583W18-72524.8201.27W11428.328181.4111W138-630.530.3161.5875W112-633.833.5141.8143W158-53635.7131.9538W134-539.239122.1167W118-541.841.5112.3091W2-4124544.7102.54牙套螺纹攻用92.8222规格钻头径下孔径83.175上限下限73

13、.6286M3*0.53.13.23.1264.2333M4*0.74.24.34.1755.08M5*0.85.25.335.164125.6444M6*16.36.426.2546.35M8*1.258.48.528.313127.2571M10*1.510.510.6210.373127.8154M10*1.2510.410.5210.3138.4667M10*110.310.4210.252788.8348M12*1.7512.512.7312.432349.2364M12*1.512.512.6212.372589.6762M12*1.2512.512.5212.3121210.16

14、M14*214.514.8314349M14*1.514.514.6214.37M16*216.516.8316.49M16*1.516.516.6216.37M18*2.51919.0418.58M18*1.518.518.6218.37M20*2.52121.0420.58M20*1.520.520.6220.37美制粗螺纹英制管螺纹规格UNC 外径2 级牙钻孔径规格标准径钻孔径标准径最大最小最大最小NO.164（1.854）1.551.5821.452PS116-286.56.6326.49NO.2-56(2.184)1.81.8711.695PS18-288.58.6878.495NO

15、.3-48(2.515)2.12.1461.941Ps14-1911.411.54911.341NO.4-40(2.845)2.32.3852.157PS38-191515.05414.846NO.5-40(3.173)2.62.6792.487PS12-1418.518.73318.489NO.6-32(3.505)2.82.8952.642PS34-142424.25923.975NO.8-32(4.166)3.43.533.302PS14-1130.230.47130.111NO.10-24(4.826)3.93.9623.683PS1-14-1138.839.13238.772NO.1

16、2-24(5.486)4.54.5974.344PS1-12-1144.845.02544.66514-205.15.2574.979PS2-12-1156.556.83656.476516-186.66.7316.40138-1688.1537.793英制管螺纹716-149.49.559.144规格标准径标准长度之螺牙内径12-1310.811.02310.592使用铰刀时不用铰刀时916-1212.212.44611.989PT116-286.16.26.38458-1113.612.86813.386PT18-288.188.38834-1016.518.8416.307PT14-19

17、10.71111.17478-919.519.76119.507PT38-1914.214.514.68518-822.222.60621.971PT12-1417.61318.2631-18-72525.34924.6398PT34-142323.523.6631-14-728.228.52427.813PT14-112929.529.8221-38-630.831.11530.353PT1-14-1137.53838.3391-12-63434.2933.528PT1-12-1143.44444.2321-34-539.539.82738.964PT2-2-1154.955.555.844

18、1-4-1245.245.59344.679公制粗螺纹公制细螺纹规格标准径最大最小规格标准径最大最小规格标准径最大最小M1.0*0.250.750.7850.729M1.0*0.20.80.8210.783M15*1.01414.35313.917M1.1*0.250.850.8850.829M1.1*0.20.90.9210.883M16*1.514.514.67614.376M1.2*0.250.950.9850.929M1.2*0.211.0210.983M16*1.01515.15314.917M1.4*0.31.11.1421.075M1.4*0.21.21.2211.183M17*

19、1.515.515.67615.376M1.6*0.351.251.3211.221M1.6*0.21.41.4211.383M17*1.01616.15315.917M1.7*0.351.351.4211.321M1.7*0.21.451.51.46M18*2.01616.2115.835M1.8*0.351.451.5211.421M1.8*0.21.61.6211.583M18*1.516.516.67616.376M2.0*0.41.61.6791.567M2.0*0.251.751.7851.729M18*1.01717.15316.917M2.2*0.451.751.8881.71

20、3M2.2*0.251.951.9851.929M20*2.01818.2117.835M2.3*0.41.91.9791.867M2.3*0.252.052.0612.001M20*1.518.518.67618.376M2.5*0.452.12.1382.013M2.5*0.352.22.2212.121M20*1.01919.15318.917M2.6*0.452.22.2382.113M2.5*0.352.22.2462.186M22*2.02020.2119.835M3.0*0.52.52.5992.459M3.0*0.352.72.7212.621M22*1.520.520.676

21、20.376M3.0*0.62.42.442.28M3.5*0.353.23.2213.121M22*1.02121.15320.917M3.5*0.62.93.012.85M4.0*0.53.53.5993.459M24*2.02222.2121.835M4.0*0.73.83.4223.242M4.5*0.544.0993.959M24*1.522.522.67622.376M4.0*0.753.253.3263.106M5.0*0.54.54.5994.459M24*1.02323.15322.917M4.5*0.73.83.8783.688M5.5*0.555.0994.959M25*

22、2.02323.2122.835M5*0.84.24.3344.134M6.0*0.755.35.3785.188M25*1.523.523.67623.376M5*0.94.14.173.98M6.0*0.55.55.555.4M25*1.02424.15323.917M6*1.055.1534.917M7.0*0.756.36.3786.188M26*1.524.524.67624.876M7*1.066.1535.917M7.0*0.56.56.556.4M27*2.02525.2124.735M8*1.256.86.9126.647M8.0*177.1536.917M27*1.525.

23、525.67625.376M9*1.257.87.9127.647M8.0*0.757.37.3787.188M27*1.02626.15325.735M10*1.58.58.6768.376M8.0*0.57.57.527.4M28*2.02626.2125.835M11*1.59.59.6769.376M9.0*188.1537.917M28*1.52626.67626.376M12*1.7510.310.2410.11M9.0*0.758.38.3788.188M28*1.02727.15326.917M14*2.01212.2111.84M10*1.258.88.9128.647M30

24、*3.02727.25226.752M16*2.01414.2113.84M10*1.099.1538.917M30*2.02828.2127.835M18*2.51515.14415.29M10*0.759.39.3789.188M30*1.02828.67628.376M20*2.51717.74417.29M10*0.59.59.529.4M32*2.03029.15328.917M22*2.51919.74419.29M11*1.01010.1539.917M32*1.53030.2129.835M24*3.02121.25220.75M11*0.7510.310.37810.19M3

25、3*3.03030.67630.376M27*3.02424.25223.75M12*1.510.510.67610.38M33*2.03130.25229.752M30*3.526.526.77126.21M12*1.2510.810.91210.65M33*1.531.531.2130.835M12*11111.15310.92M35*1.533.533.67631.376M12*0.511.511.52311.4M36*3.03333.25232.752M14*0.512.512.67612.38M36*2.03434.2133.835M14*1.01313.15312.92M36*1.53434.67634.376M15*1.5013.513.67613.38M36*1.5_6h螺纹小径：34.376、径 35.350；小径计算：螺纹小径=螺纹公称尺寸-1.082531755P其P螺距；M36*1.5_6h螺纹小径=36-1.082531755X1.5=34.3762希望对有帮助我说的是普通螺纹，外螺纹和内螺纹的计算公式相同，只是外螺纹的公差是负公差，内螺纹的公差是正公差，这样才能配合。 大径为d(即M18的18，M30的30）,螺距为p: 中经=d-0.6495p 小径=d-1.0825p 牙高=0.866p希望对你有帮助，不过我也是刚学的