英制螺纹尺寸表英制尺寸公称直径底孔直径英制尺寸公称直径底孔直径SM1/4″×20Φ6
080SM3/32″×56Φ2
928SM1/4″×24Φ6
290SM7/32″×22Φ5
402SM1/4″×28Φ6
443SM7/32″×32Φ5
763SM1/4″×40Φ6
705SM9/32″×20Φ7
873SM1/8″×40Φ3
540SM9/32″×28Φ7
237SM1/8″×44Φ3
598SM11/32″×28Φ8
824SM1/8″×48Φ3
646SM3/64″×32Φ1
397SM3/8″×28Φ9
620SM5/64″×64Φ1
511SM5/8″×28Φ15
957SM9/64″×40Φ3
937SM3/16″×24Φ4
704SM11/64″×32Φ4
572SM3/16″×32Φ4
957SM11/64″×40Φ4
731SM3/16″×28Φ4
855SM13/32″×32Φ5
366SM3/16″×40Φ4
128SM15/64″×28Φ5
046SM5/16″×18Φ7
526SM17/64″×32Φ6
953SM5/16″×24Φ7
879SM1/2″×28Φ12
792SM5/16″×28Φ7
030SM1/2″×14Φ20
70英制内螺纹小径计算公式:螺纹直径×25
4/每英尺牙数例:11/64″×40=11/64×25
4/40=4