各种内螺纹钻孔径

英制螺紋規格鑽孔徑硬材軟材W1/8-402.652.60W5/32-323.253.20W3/16-243.753.70W1/4-205.105.00W5/16-186.606.50W3/8-168.007.90W7/16-149.409.30W1/2-1210.7010.50W9/16-1212.3012.00W5/8-1113.7013.50W3/4-1016.7016.50W7/8-919.5019.30W1-822.422.00W1-1/8-725.0024.80W1-1/4-728.3028.00英制管螺紋規格標準徑鑽孔徑最大最小PS1/16-286.506.6326.49PS1/8-288.508.6378.495PS1/4-1911.4011.54911.34PS3/8-1915.0015.05414.85PS1/2-1418.5018.77318.49PS3/4-1424.0024.25923.98PS1-1130.2030.47130.11PS1-1/4-1138.8039.13238.77PS1-1/2-1144.8045.02544.67PS2-1156.5056.83656.48英制螺紋滾造徑規格滾造徑W3/16-244.08-4.05W1/4-205.51-5.46W5/16-187.01-6.95W3/8-168.48-8.41W7/16-149.92-9.85W1/2-1211.31-11.24W9/16-1212.89-12.82針車用螺紋規格滾造徑SM1/8-402.735-.688SM1/8-442.769-2.722SM9/64-403.128-3.083SM11/64-403.855-3.805SM3/16-324.205-4.155SM3/16-284.143-4.093SM7/32-325.003-4.955SM15/64-285.325-5.570SM1/4-405.890-5.735SM1/4-285.721-5.366SM9/32-286.508-6.648SM11/32-288.092-8.432SM3/8-288.880-8.015SM7/16-2810.466-10.401SM7/16-1610.037-9.967SM1/2-2011.819-11.749SM9/16-2013.400-13.425