英制螺纹规格及加工资料

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1、英制螺纹规格及加工资料55度圆柱管螺纹（PT）55度圆锥管螺纹（PS）螺纹类型每寸牙数螺纹外径钻孔直径每寸牙数基面外径钻孔直径1/41913.157ø111913.157ø11.43/81916.662Ø14.51916.662Ø15.01/21420.955Ø18.01420.955Ø18.5（5/8）1422.91122.9113/41426.441Ø23.51426.441Ø24.0（7/8）1430.20130.201Ø11133.249Ø29.51133.249Ø30.21-1/81137.8491137.8491-1/41141.910Ø38.0114

2、1.910Ø38.81--1/21147.803Ø44.01147.803Ø44.8（1-3/4）1153.74653.74621159.614Ø55.51159.614Ø56.5（2-1/4）1165.71065.7102-1/21176.1841176.1842-3/41181.5311181.53131187.8841187.884英制（美制）螺纹规格及加工资料55度英制普螺纹（BSW）60度美制管螺纹（NPT）螺纹类型每寸牙数螺纹外径钻孔直径每寸牙数外径钻孔直径1/16197.9ø6.251/840Ø2.652710.3Ø8.435/3232Ø3.253/

3、1624Ø3.751/420Ø5.1018Ø13.6Ø11.35/1618Ø6.603/816Ø8.0018Ø14.8Ø12.17/1614Ø9.401/212Ø10.7014Ø21.21Ø18.329/1612Ø12.305/811Ø13.703/410Ø16.7014Ø26.57Ø23.677/89Ø19.5018Ø22.4011Ø33.23Ø29.2