美制锥管螺纹尺寸表.doc

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1、美制锥管螺纹尺寸表(NPT)美制锥管螺纹尺寸(NPT)牙型角=60°公称直径每英寸牙数n螺纹长度螺纹配合长度螺牙有效高度(H=h+0.5)外螺纹直径最小大径最大大径最小中径最大中径最小小径最大小径1/8"NPT2794.10.8159.64110.299.2339.8979.0829.4891/4"NPT18155.791.22212.73713.7212.12613.09811.87612.4873/8"NPT18156.101.22216.15617.1515.54516.53715.315

2、15.9261/2"NPT14198.131.57120.05021.3419.26420.55818.98719.7723/4"NPT14208.611.57125.36526.6724.57925.90324.33225.1171"NPT11.52510.161.91331.78333.4030.82632.41830.50531.4611-1/4"NPT11.52510.671.91340.50842.1639.55141.17439.26240.2181-1/2"NPT11.52610.

3、671.91346.57748.2645.62147.24445.33446.2872"NPT11.52611.071.91358.59060.3357.63359.28257.36958.325内螺纹直径底孔最大中径最小中径最大小径最小小径最大大径最小大径9.4758.8269.0828.2639.8979.0788.0012.49811.51511.87610.57713.09811.79910.7015.92814.93415.31513.99716.53715.21914.2519.76

4、918.47918.86217.29120.55818.86218.525.09923.79424.11522.54425.90324.11523.531.48729.87030.22028.30732.41830.22029.540.24738.59538.94537.03241.17438.94538.546.34744.66444.95243.03947.24444.95244.5058.41756.67756.96555.05259.28256.96556.00