螺纹外径对照表,外螺纹搓丝尺寸对照表

螺纹外径对照表,外螺纹搓丝尺寸对照表

常用螺纹尺寸对照表英制螺纹粗螺纹(UNC)螺纹尺寸底孔(mm)底孔3#-484#-405#-406#-328#-3210#-2412#-241/4"-205/16"-183/8"-167/16"-141 /2"-139/16Thecurrentdivisionmethodis55degreeunsealedpipethreadisG,55sealedpipethreadTherearetwotypes:RpcylindricalinternalthreadwithconicalexternalthreadR1andRcconicalinternalthreadwithconicalexternalthreadR2,60degreeconicalpipethread,thatis,NPTpipethreadismarkedasNPT1/2.Measurementmethod:1.Measurementofthreadanglethread

ˋ﹏ˊ 英制管螺纹尺寸代号螺纹数每寸大径中径小径推荐底孔参考距离齿数1/827（α代表半角）；2.根据螺距，玉米的普通螺纹分为两种：粗斜面的普通螺纹和细斜面的普通螺纹速度；

1.英制管螺纹（牙角55）BSPP螺纹代号basicdiameterinternalthreadexternalthreadlargediametermediumdiametersmalldiametertolerancesmalldiametertolerancesmalldiametertoleranceclassAmediumdiametertolerancelargediametertolerancemediumdiametertolerancelargediametertoleranceG1/8289.72891.Metricthreadedfastenerthreaddiameterand螺距对照表螺纹量规M3M4M5M6M8M10M12M14M16M18M20M22M24M27M30M33M36M39M42M45M48M52M56M60M64粗牙

例：632-8-PPB。***外径和英制丝杆长度必须换算成公制mm尺寸，1"(inch)=25.4mm(mm)。***常用螺纹尺寸参数速查表：表(1)螺纹基本尺寸G1/2、ZG1/2(单位：mm)。6尺寸代表每个螺纹螺距pNo.25.4 mmNumberofteethn1/16280.9071/8280.9071/4191.3373/8191.3371/2141.8143/4141.8141