精品文献
英制螺母厂
英制螺纹底孔直径
mm 钻 后 不 铰 孔 钻 后 铰 孔 镗 后 铰 孔 镗 后 不 铰 孔 Z1/8" 8.7 8.4 Z1/4" 11.3 10.7 Z3/8" 14.8 14 Z1/2" 18.3 17.5 Z3/4" 23.7 22.8 Z1" 29.6 28.6 28.6 +0.14 29.6 +0.14 Z1 1/4 " 38.5 37.3 37.3 +0.17 38.5 +0.17 Z1 1/2" 44.5 43.3 43.3 +0.17 44.5 +0.17 Z2" 57 55 55+0.2 57+0.2 mm d 钻孔直径 d 钻孔直径 镗孔直径 G1/8" 8.8 G1" 30.5 30.5 +0.17 G1/4" 11.7 G1 1/4 " 39.2 +0.17 G3/8"