常用螺纹尺寸对照表.xls

常用螺纹尺寸对照表 英制螺纹 中国标准管螺纹 公制螺纹 粗牙(UNC) 细牙(UNF) 螺纹尺寸大径(mm) 小径(mm) 粗牙 细牙 螺纹尺寸 底孔(mm)底孔螺纹尺寸底孔(mm)底孔G1/8“-289.738.5螺纹尺寸底孔(mm) 螺纹尺寸 底孔(mm) 3#-482.0.0785“ 3#-562.05 .081“G1/4“-1913.211.4M2.5*0.452.1M2.5*0.352.12 4#-402.26 .089“4#-482.4.935“G3/8“-1916.715.0M3*0.52.5M3*0.352.62 5#-402.6.1015“ 5#-442.65 .104“G1/2“-1421.018.6M4*0.73.3M4*0.53.46 6#-322.7.1065“ 6#-402.87 .113“G3/4“-1426.424.1M5*0.84.2M5*0.54.46 8#-323.45 .136“8#-363.45 .136“G1“-1133.330.3M6*15.0M6*0.755.2 10#-243.7.147“10#-324.0.159“G1-1/4“-1142.039.0M8*1.256.7M8*0.757.2 12#-244.5.177“12#-284.6.180“G1/1/2“-1147.844.9M10*1.58.4M10*18.9 1/4“-205.1.201“1/4“-285.4.213“G2“-1159.656.7M12*1.7510.2M12*110.9 5/16“-186.5.257“5/16“-246.9.272“ 美国标准管螺纹(NPT)M14*211.9M14*1.512.4 3/8“-167.94 5/16“3/8“-248.4.332“G1/8“-2710.08.4M16*213.9M16*1.514.4 7/16“-149.35 .368“7/16“-209.925/64“G1/4“-1813.211.1M18*2.515.3M18*1.516.4 1/2“-1310.727/64“ 1/2“-2011.529/64“G3/8“-1816.714.3M20*2.517.3M20*1.516.4 9/16“-1212.331/64“ 9/16“-1813.133/64“G1/2“-1421.317.86 M24*320.8M24*1.522.4 5/8“-1113.517/32“ 5/8“-1814.737/64“G3/4“-1426.623.0M27*323.8M27*1.525.4 3/4“-1016.721/32“ 3/4“-1617.511/16“G1“-11.533.429.0M30*3.526.3M30*1.528.4 7/8“-919.549/64“ 7/8“-1420.613/16“G1-1/4“-11.542.137.7M36*431.7M36*1.534.4 1“-822.27/8“1“-1223.459/64“G1/1/2“-11.548.243.66 M42*4.537.2M42*1.540.4 1-1/4“-7