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"
名义尺 寸 大径 螺距 每英寸 牙数 中径 小径 牙型高 底孔直 径 BA mm mm tpi mm 外螺纹 H1 mm d=D p d2=D2 d3 No. 14 BA 1 0.23 110.4 0.86 0.72 0.14 0.75 No. 13 BA 1.2 0.25 101.6 1.05 0.9 0.15 0.95 No. 12 BA 1.3 0.28 90.71 1.13 0.96 0.17 1 No. 11 BA 1.5 0.31 81.93 1.315 1.13 0.185 1.2 No. 10 BA 1.7 0.35 72.57 1.49 1.28 0.21 1.35 No. 9 BA 1.9 0.39 65.12 1.665 1.43 0.235 1.5 No. 8 BA 2.2 0.43 59.07 1.94 1.68 0.26 1.8 No. 7 BA 2.5 0.4