公称直径x螺距M8x1M10x1M10x1.5M12x0.75M12x1.25M12x1.5M14x1M14x1.5M16x1M16x1.25M16x1.5M18x1M18x1.5M20x1M20x1.5M22x1M22x1.5M24x1M25x1M25x1.5M26x1M26x1.5M27x1M27x1.5M27x2M30x1.5M30x2M36x2M40x2M48x1.5M50x1.5M70x1.5 外径尺寸范围φ7.794~7.974φ9.794~9.974φ9.732~9.968(φ11.87~11.98)φ11.76~11.974φ11.732~11.968φ13.794~13.974φ13.732~13.968φ15.794~15.974φ15.76~15.972φ15.732~15.968φ17.794~17.974φ17.732~17.968φ19.794~19.974φ19.732~19.974φ21.794~21.974外径尺寸平均值φ7.884φ9.884φ9.85(φ11.925)φ11.867φ11.85φ13.884φ13.85φ15.884φ15.886φ15.85φ17.884φ17.85φ19.884φ19.853φ21.884锥管螺纹R1/8 L=6.5时 φ9.728R1/4 L=9.7时 φ13.157R1/2 L=13.2时 φ20.955直管螺纹G1/16(28扣) φ7.509~7.723G1/8(28扣) φ9.50~9.729G1/4(19扣) φ12.907~13.158G1/2(14扣) φ20.671~20.955G3/4(14扣) φ26.157~26.44G1 (11扣) φ32.889~33.25G11/2 (11扣)φ47.40~47.805特殊螺纹7/16-20uNF φ11.1125/8-18uNF φ14.96~15.3873/4-16uNF φ18.72~19.05φ23.794~23.974φ23.884φ24.794~24.974φ24.884φ24.732~24.968φ24.85NPT1/4 L=9.5时 最大φ13.572 1°47′24″φ26.794~26.974φ26.732~26.968φ26.682~26.962φ29.732~29.968φ29.628~29.962φ35.682~35.962φ39.682~39.962φ47.732~47.962φ49.732~49.962φ69.632~69.968 公式=φ26.884PG7(20扣)大径φ12.5小径φ11.28φ26.85φ26.822φ29.85φ29.80φ35.822φ39.822φ47.85φ49.85φ69.85外径-0.1P(-0.1) 内螺纹小径公差对照表
公称直径x螺距M8x1.25M12x0.75M12x1M12x1.25M12x1.5M14x1.5M16x0.75M18x0.75M18x1.5M20x1M20x1.5M24x1M26x1M27x1M27x1.5M27x2M28x1M30x1M30x1.5M30x2M32x1.5M38x2M40x2M42x2M48x1M48x1.5M50x1.5M68x2 小径尺寸范围φ6.649~6.912φ11.18~11.378φ10.918~11.153φ10.649~10.912φ10.377~10.676φ12.377~12.676φ15.188~15.378φ17.188~17.378φ16.376~16.676φ18.92~19.154φ18.376~18.676φ22.92~23.154φ24.92~25.154φ25.92~26.154φ25.376~25.676φ24.835~25.21φ26.92~27.154φ28.92~29.154φ28.376~28.676φ27.835~28.21φ30.376~30.676φ35.835~36.21φ37.835~38.21φ39.835~40.21φ46.92~47.154φ46.376~46.676φ48.376~48.676φ65.835~66.21小径尺寸平均值 平均值公式=公称直径-螺距φ6.78φ11.279φ11.036φ10.781例:M12-1.25=10.75平均值φ10.523或M12-1.25x1.0825=10.648最小值φ12.527φ15.283φ17.283φ16.526φ19.037φ18.523φ23.037φ25.037φ25.037φ25.523φ25.023φ27.037φ29.037φ28.523φ28.023φ30.523φ36.023φ38.023φ40.023φ47.037φ46.523φ48.523φ66.023φ11.69φ30.60G1/4(19扣)φ11.56~11.83G1(11扣)φ30.43~30.78NPT1/8(27扣)φ8.766
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