常用螺紋底孔尺寸表.doc

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1、.英制螺紋尺寸表英制尺寸公稱直徑底孔直徑英制尺寸公稱直徑底孔直徑SM1/4″×20Φ6.350Φ5.080　SM3/32″×56Φ2.381Φ1.928SM1/4″×24Φ6.350Φ5.290　SM7/32″×22Φ5.556Φ4.402SM1/4″×28Φ6.350Φ5.443　SM7/32″×32Φ5.556Φ4.763SM1/4″×40Φ6.350Φ5.705　SM9/32″×20Φ7.144Φ5.873SM1/8″×40Φ3.175Φ2.540　SM9/32″×28Φ7.144Φ6.237SM1/8″×44Φ3.175Φ2.598　SM11/32″×28Φ8

2、.731Φ7.824SM1/8″×48Φ3.175Φ2.646　SM3/64″×32Φ1.191Φ0.397SM3/8″×28Φ9.520Φ8.620　SM5/64″×64Φ1.984Φ1.511SM5/8″×28Φ15.87Φ14.957　SM9/64″×40Φ3.572Φ2.937SM3/16″×24Φ4.762Φ3.704　SM11/64″×32Φ4.366Φ3.572SM3/16″×32Φ4.762Φ3.957　SM11/64″×40Φ4.366Φ3.731SM3/16″×28Φ4.762Φ3.855　SM13/32″×32Φ5.519Φ4.366SM3/16

3、″×40Φ4.762Φ4.128　SM15/64″×28Φ5.953Φ5.046SM5/16″×18Φ7.938Φ6.526　SM17/64″×32Φ6.747Φ5.953SM5/16″×24Φ7.938Φ6.879　SM1/2″×28Φ12.70Φ11.792SM5/16″×28Φ7.938Φ7.030　SM1/2″×14Φ20.50Φ18.70英制內(nèi)螺紋小徑計(jì)算公式：螺紋直徑×25.4-25.4/每英尺牙數(shù)例：11/64″×40=11/64×25.4-25.4/40=4.3656-0.635≈3.73公制螺紋尺寸表公制螺紋M1M2M2.5M3M3.5M4M4.5M

4、5M6M7M8M10M12M14M16粗牙螺距0.250.40.450.50.60.70.750.8111.31.51.7522鉆頭直徑Φ0.75Φ1.6Φ2.05Φ2.5Φ2.9Φ3.3Φ3.75Φ4.2Φ5Φ6Φ6.7Φ8.5Φ10.2Φ11.9Φ13.9細(xì)牙螺距0.20.30.40.50.50.810.7511.250.751.51.2511.51.2511.51鉆頭直徑0.81.82.73.54.55.277.298.79.210.510.71112.512.71314.51.5公、英制轉(zhuǎn)換英寸值1/64″1/56″1/48″1/44″1/40″1/32″1/

5、28″公制值0.3970.4540.5290.5770.6350.7940.907英寸值1/24″1/20″1/18″1/16″1/8″1/4″1/2″公制值1.0581.271.4111.5883.1756.3512.7精選word范本！