螺纹基本尺寸

普通螺纹（GB/T196-1981）—基本尺寸公称直径D、d螺距P中径小径第一系列第二系列第三系列粗牙细牙或或D2d2D1d10.250.8380.729M10.20.8700.7830.250.9380.829M1.10.20.9700.8830.251.0380.929M1.20.21.0700.9830.31.2051.075M1.40.21.2701.1830.351.3731.221M1.60.21.4701.3830.351.5731.421M1.80.21.6701.5830.41.7401.567M20.251.8381.7290.451.9081.713M2.20.252.0381.9290.452.2082.013M2.50.352.2732.1210.52.6752.459M30.352.7732.621(0.6)3.1102.850M3.50.353.2733.1210.73.5453.242M40.53.6753.4590.754.0133.688M4.50.54.1753.9590.84.484.134M50.54.6754.459M5.50.55.1754.95915.3504.917M60.755.5135.188(0.5)5.6755.45916.3505.917M70.756.5136.188(0.5)6.6756.4991.257.1886.64717.3506.917M80.757.5137.188(0.5)7.6757.459普通螺纹（GB/T196-1981）—基本尺寸公称直径D、d螺距P中径小径第一系列第二系列第三系列粗牙细牙或或D2d2D1d1(1.25)8.1887.64718.3507.917M90.758.5138.188(0.5)8.6758.4591.59.0268.3761.259.1888.647M1019.3508.9170.759.5139.188(0.5)9.6759.459(1.5)10.0269.376110.3509.917M110.7510.51310.188(0.5)10.67510.4591.7510.86310.1061.511.02610.3761.2511.18810.647M12111.35010.9170.7511.51311.188(0.5)11.67511.459212.70111.8351.513.02612.376(1.25)13.18812.674M14113.35012.917(0.75)13.51313.188(0.5)13.67513.4591.514.02613.376M15(1)14.35013.917214.70113.8351.515.02614.376M16115.35014.917(0.75)15.51315.188(0.5)15.67515.4591.516.02615.376M17(1)16.35015.9172.521.5M181(0.75)(0.5)普通螺纹（GB/T196-1981）—基本尺寸公称直径D、d螺距P中径小径第一系列第二系列第三系列粗牙细牙或或D2d2D1d12.518.37617.294218.70117.8351.519.02618.376M20119.35018.917(0.75)19.51319.188(0.5)19.67519.4592.520.37619.294220.70119.8351.521.02620.376M22121.35020.917(0.75)21.51321.188(0.5)21.67521.459322.05120.752222.70121.835M241.523.02622.376123.35022.917(0.75)23.51323.188223.70122.835M251.524.02623.376(1)24.35023.917M261.525.02624.376325.05123.752225.70124.835M271.526.02625.376126.35025.917(0.75)26.51326.188226.70125.835M281.527.02626.376127.35026.9173.527.72726.211(3)28.05126.752228.70127.835M301.529.02628.376129.35028.917(0.75)29.51329.188230.70129.835M321.531.02630.3763.530.72729.211(3)31.05129.752231.70130.835M331.532.02631.376(1)32.35031.917(0.75)32.51332.188普通螺纹（GB/T196-1981）—基本尺寸公称直径D、d螺距P中径小径第一系列第二系列第三系列粗牙细牙或或D2d2D1d1M351.534.02633.376433.40231.670334.05132.752M36234.70133.8351.535.02634.376(1)35.35034.917M381.537.02636.376436.40234.670337.05135.752M39237.70136.8351.538.02637.376(1)38.35037.917(3)38.05136.752M40(2)38.70137.8351.539.02638.3764.539.07737.129(4)39.40237.670340.05138.752M42240.70139.8351.541.02640.376(1)41.35040.9174.542.07740.129(4)42.40240.670343.05141.752M45243.70142.8351.544.02643.376(1)44.35043.917544.75242.587(4)45.40243.670346.05144.752M48246.70145.8351.547.02646.376(1)47.35046.917(3)48.05146.752M50(2)48.70147.8351.549.02648.376548.75246.587(4)49.40247.670350.05148.752M52250.70149.8351.551.02650.376(1)51.35050.917普通螺纹（GB/T196-1981）—基本尺寸公称直径D、d螺距P中径小径第一系列第二系列第三系列粗牙细牙或或D2d2D1d1(4)52.40250.670(3)53.05151.752M55253.70152.8351.554.02653.3765.552.42850.046453.40251.670354.05152.752M56254.70153.8351.555.02654.376(1)55.35054.917(4)55.40253.670(3)56.05154.752M58256.70155.8351.557.02656.376(5.5)56.42854.046457.40255.670358.05156.752M60258.70157.8351.559.02658.376(1)59.35058.917(4)59.40257.670(3)60.05158.752M62260.70159.8351.561.02660.376660.10357.505461.40259.670362.05160.752M64262.70161.8351.563.02662.376(1)63.35062.917(4)62.40260.670(3)63.05161.752M65263.70162.8351.564.02663.376664.10361.505465.40263.670366.05164.752M68266.70165.8351.567.02666.376(1)67.35066.917普通螺纹（GB/T196-1981）—基本尺寸公称直径D、d螺距P中径小径第一系列第二系列第三系列粗牙细牙或或D2d2D1d1(6)66.10363.505(4)67.40265.670M70(3)68.05166.752268.70167.8351.569.02668.376668.10365.505469.40267.670370.05168.752M72270.70169.8351.571.02670.376(1)71.35070.917(4)72.40270.670(3)73.05171.752M75273.70172.8351.574.02673.376672.10369.505473.40271.670374.05172.752M76274.70173.8351.575.02674.376(1)75.35074.917M78276.70175.835676.10373.505477.40275.670378.05176.752M80278.70177.8351.579.02678.376(1)79.35078.917M82280.70179.835681.10378.505482.40280.670M85383.05181.752283.70182.835(1.5)84.02683.376686.10383.505487.40285.670M90388.05186.752288.70187.835(1.5)89.02688.376普通螺纹（GB/T196-1981）—基本尺寸公称直径D、d螺距P中径小径第一系列第二系列第三系列粗牙细牙或或D2d2D1d1691.10388.505492.40290.670M95393.05191.752293.70192.835(1.5)94.02693.376696.10393.505497.40295.670M100398.05196.752298.70197.835(1.5)99.02698.3766101.10398.5054102.402100.670M1053103.051101.7522103.701102.835(1.5)104.026103.3766106.103103.5054107.402105.670M1103108.051106.7522108.701107.835(1.5)109.026108.3766111.103108.5054112.402110.670M1153113.051111.7522113.701112.835(1.5)114.026113.3766116.103113.5054117.402115.670M1203118.051116.7522118.701117.835(1.5)119.026118.3766121.103118.5054122.402120.670M1253123.051121.7522123.701122.835(1.5)124.026123.3766126.103123.5054127.402125.670M1303128.051126.7522128.701127.835(1.5)129.026128.376普通螺纹（GB/T196-1981）—基本尺寸公称直径D、d螺距P中径小径第一系列第二系列第三系列粗牙细牙或或D2d2D1d16131.103128.5054132.402130.670M1353133.051131.7522133.701132.8351.5134.026133.3766136.103133.5054137.402135.670M1403138.051136.7522138.701137.835(1.5)139.026138.3766141.103138.5054142.402140.670M1453143.051141.7522143.701142.8351.5144.026143.3766146.103143.5054147.402145.670M1503148.051146.7522148.701147.835(1.5)149.026148.3766151.103148.5054152.402150.670M1553153.051151.7522153.701152.8356156.103153.5054157.402155.670M1603158.051156.752(2)158.701157.8356161.103158.5054162.402160.670M1653163.051161.7522163.701162.8356166.103163.5054167.402165.670M1703168.051166.752(2)168.701167.8356171.103168.5054172.402170.670M1753173.051171.7522173.701172.835普通螺纹（GB/T196-1981）—基本尺寸公称直径D、d螺距P中径小径第一系列第二系列第三系列粗牙细牙或或D2d2D1d16176.103173.5054177.402175.670M1803178.051176.752(2)178.701177.8356181.103178.5054182.402180.670M1853183.051181.7522183.701182.8356186.103183.5054187.402185.670M1903188.051186.752(2)188.701187.8356191.103188.5054192.402190.670M1953193.051191.7522193.701192.8356196.103193.5054197.402195.670M2003198.051196.752(2)198.701197.8356201.103198.505M2054202.402200.6703203.051201.7526206.103203.505M2104207.402205.6703208.051206.7526211.103208.505M2154212.402210.6703213.051211.7526216.103213.505M2204217.402215.6703218.051216.7526221.103218.505M2254222.402220.6703223.051221.7526226.103223.505M2304227.402225.6703228.051226.752普通螺纹（GB/T196-1981）—基本尺寸公称直径D、d螺距P中径小径第一系列第二系列第三系列粗牙细牙或或D2d2D1d16231.103228.505M2354232.402230.6703233.051231.7526236.103233.505M2404237.402235.6703238.051236.7526241.103238.505M2454242.402240.6703243.051241.7526246.103243.505M2504247.402245.6703248.051246.7526251.103248.505M2554252.402250.670(3)253.051251.7526256.103253.505M2604257.402255.670(3)258.051256.7526261.103258.505M2654262.402260.670(3)263.051261.7526266.103263.505M2704267.402265.670(3)268.051266.7526271.103268.505M2754272.402270.670(3)273.051271.7526276.103273.505M2804277.402275.670(3)278.051276.7526281.103278.505M2854282.402280.670(3)283.051281.7526286.103283.505M2904287.402285.670(3)288.051286.7526291.103288.505M2954292.402290.670(3)293.051291.752普通螺纹（GB/T196-1981）—基本尺寸公称直径D、d螺距P中径小径第一系列第二系列第三系列粗牙细牙或或D2d2D1d16296.103293.505M3004297.402295.670(3)298.051296.7526306.103303.505M3104307.402305.6706316.103313.505M3204317.402315.6706326.103323.505M3304327.402325.6706336.103333.505M3404337.402335.6706346.103343.505M3504347.402345.6706356.103353.505M3604357.402355.6706366.103363.505M3704367.402365.6706376.103373.505M3804377.402375.6706386.103383.505M3904387.402385.6706396.103393.505M4004397.402395.670M4106406.103403.505M4206416.103413.505M4306426.103423.505M4406436.103433.505M4506446.103443.505M4606456.103453.505M4706466.103463.505M4806476.103473.505M4906486.103483.505M5006496.103493.505M5106506.103503.505M5206516.103513.505M5306526.103523.505M5406536.103533.505M5506546.103543.505M5606556.103553.505普通螺纹（GB/T196-1981）—基本尺寸公称直径D、d螺距P中径小径第一系列第二系列第三系列粗牙细牙或或D2d2D1d1M5706566.103563.505M5806576.103573.505M5906586.103583.505M6006596.103593.505表中数值按下列公式计算，数值圆整到小数点后第三位：D＝D－10H/8；D＝D－6H/812d＝d－10H/8；d＝d－6H/812H＝√3P/2＝0.866025404PD—内螺纹大径；D—内螺纹小径；D—内螺纹中径；12d—外螺纹大径；d—外螺纹小径；d—外螺纹中径；12P—螺距；H—原始三角形高度注：1、直径优先选用第一系列，其次第二系列，第三系列尽可能不用。2、带括号的螺距尽可能不用。3、M14×1.25仅用于火花塞，M35×1.5仅用于滚动轴承锁紧螺母。4、对直径150～600mm的螺纹，需要使用螺距大于6mm的螺纹时，应优先选用8mm的螺距。