标准公制螺纹基本牙型和公式Word文档格式.docx

1、3.5453.2423.6753.459M4.50.754.5004.0133.6884.1753.959M50.85.0004.4804.1344.6754.459M616.0005.3504.9175.5135.188M81.258.0007.1886.6477.3506.917M101.510.0009.0268.3769.1888.647M121.7512.00010.86310.10611.02610.376M14214.00012.70111.83513.02612.376M1616.00014.70113.83515.02614.376M182.518.00016.37615.2

2、94（M18）17.026M2020.00018.37617.29419.026M2222.00020.37619.294（M22）20.70119.835M24324.00022.05120.75222.70121.835M2727.00025.05123.75226.00025.70124.835M303.530.00027.72726.211M2828.00026.70125.835M3333.00030.72729.21128.05126.752M36436.00034.40231.67032.00031.05129.752M3939.00036.40234.67034.05132.7

3、52M424.542.00039.07737.12938.00037.05135.752M4545.00042.07740.129M4040.00038.05136.752螺纹公称直径d钻头直径d铜不锈钢041602517505250352150733355084142456490755281256667771721015848586876912101102104105106107109111411812412512913161381441451491518153155158164165169172017317517818418518919221931951982042052092124207

4、21822422522923非螺纹密封英制英制锥管螺纹英制锥螺纹螺纹直径牙数钻头直径1/82888271/41171121113/81521471/21831793/42442362323062971152921-1/43923833791-3/84161-1/244143945155856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）0.9199.739.158.570.581.3413.1612.311.450.8616.6615.8114.951.817.520.9619.7918.631.169.526.4425.2824.122.3

5、133.2531.7730.291.4841.9140.4338.9547.8146.3344.852659.6258.1456.663018.575.1973.7172.233220.587.8986.4184.933825.5113.03111.56110.08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:公称直径（英寸）每英寸牙数（n）管子外径（d）管接头螺纹内径（d1）名义尺寸最大外径最小外径最大内径最小内径 1/89.689.388.92

6、8.67 1/413.112.7411.8411.56 3/816.616.2415.3515.06 1/220.8919.0518.75 5/822.9122.8522.4620.5921.0120.71 3/426.3825.9724.5724.257/830.230.1429.7327.8828.3328.0133.1832.7530.7930.4341.8441.3639.4639.144.3344.2643.7841.3741.8741.5147.7447.2145.4451-3/453.7553.6753.1450.7951.3450.9459.5459.0157.2156.812-1/275.1174.5472.8372.393 87.887.1985.5885.1外径d由公称直径所决定螺纹内径 d1 = d - 1.28t1/160.946.54.067.97.146.394.5710.27