标准公制螺纹基本牙型和公式.docx

1、标准公制螺纹基本牙型和公式标准公制螺纹基本牙型和公式公制螺纹粗牙公制螺纹细牙公称尺寸M螺距P外径D=d节径D2=d2内径D1=d1公称尺寸M螺距P外径D=d节径D2=d2内径D1=d1M10.251.0000.8380.729M1.20.251.2001.0380.929M1.40.31.4001.2051.075M20.42.0001.7401.567M30.53.0002.6752.459M30.353.0002.7732.621M3.50.63.5003.1102.850M3.50.353.5003.2733.121M40.704.0003.5453.242M40.54.0003.675

2、3.459M4.50.754.5004.0133.688M4.50.54.5004.1753.959M50.85.0004.4804.134M50.55.0004.6754.459M616.0005.3504.917M60.756.0005.5135.188M81.258.0007.1886.647M818.0007.3506.917M101.510.0009.0268.376M101.2510.0009.1888.647M121.7512.00010.86310.106M121.512.00011.02610.376M14214.00012.70111.835M141.514.00013.0

3、2612.376M16216.00014.70113.835M161.516.00015.02614.376M182.518.00016.37615.294(M18)1.518.00017.02616.376M202.520.00018.37617.294M201.520.00019.02618.376M222.522.00020.37619.294(M22)222.00020.70119.835M24324.00022.05120.752M24224.00022.70121.835M27327.00025.05123.752M27226.00025.70124.835M303.530.000

4、27.72726.211M28228.00026.70125.835M333.533.00030.72729.211M30330.00028.05126.752M36436.00034.40231.670M33332.00031.05129.752M39439.00036.40234.670M36336.00034.05132.752M424.542.00039.07737.129M39338.00037.05135.752M454.545.00042.07740.129M40340.00038.05136.752螺纹公称直径d螺距P钻头直径d铜不锈钢204161602517517530525

5、2503521521540733330535355084142054545614950755252812566671770757172101584851258687169707571721217510110215104105125106107110911142118121512412511291316213814151441451149151825153155215816151641651169172025173175217818151841851189192225193195219820152042051209212432072122182215224225122923非螺纹密封英制英制锥管

6、螺纹英制锥螺纹螺纹直径牙数钻头直径螺纹直径牙数钻头直径螺纹直径牙数钻头直径1/828881/828841/827861/4191171/4191121/4181113/8191523/8191473/8181451/2141891/2141831/2141793/4142443/4142363/41423211130611429711152921-1/4113921-1/4113831-1/41153791-3/8114161-1/2114411-1/21154391-1/211451211558211556螺距(t)螺纹长度基面上螺纹直径牙型高度(h1)有效长度基面长度外径(d)中径(d2)

7、内径(d1)0.9194.59.739.158.570.581.3411613.1612.311.450.861.3412616.6615.8114.950.861.81157.520.9619.7918.631.161.81179.526.4425.2824.121.162.31191133.2531.7730.291.482.31221341.9140.4338.951.482.31231447.8146.3344.851.482.31261659.6258.1456.661.482.313018.575.1973.7172.231.482.313220.587.8986.4184.931

8、.482.313825.5113.03111.56110.081.48本螺纹基面上各直径等于圆柱螺纹的各相应直径基面上螺纹内径 d1 = d - 1.28t3/4 = 26.44 - 1.28 * 1.81 = 24.12斜角（）14724 锥角 （2tg)=1:16公称直径（英寸）每英寸牙数（n)螺距(t)管子外径（d)管接头螺纹内径（d1)牙型高度(h1)名义尺寸最大外径最小外径名义尺寸最大内径最小内径 1/8280.919.739.689.388.578.928.670.58 1/4191.3413.1613.112.7411.4511.8411.560.86 3/8191.3416.6

9、616.616.2414.9515.3515.060.86 1/2141.8120.9620.8920.518.6319.0518.751.16 5/8141.8122.9122.8522.4620.5921.0120.711.16 3/4141.8126.4426.3825.9724.1224.5724.251.167/8141.8130.230.1429.7327.8828.3328.011.161112.3133.2533.1832.7530.2930.7930.431.481-1/4112.3141.9141.8441.3638.9539.4639.11.481-3/8112.3144

10、.3344.2643.7841.3741.8741.511.481-1/2112.3147.8147.7447.2144.8545.4451.481-3/4112.3153.7553.6753.1450.7951.3450.941.482112.3159.6259.5459.0156.6657.2156.811.482-1/2112.3175.1975.1174.5472.2372.8372.391.483 112.3187.8987.887.1984.9385.5885.11.48外径d由公称直径所决定螺纹内径 d1 = d - 1.28t斜角（）14724 锥角 （2tg)=1:16公称直径（英寸）每英寸牙数（n)螺距(t)螺纹长度基面上螺纹直径牙型高度(h1)有效长度基面长度外径(d)中径(d2)内径(d1)1/16270.946.54.067.97.146.390.751/8270.9474.5710.27