螺纹底孔直径参考 公制普通螺纹 螺纹代号 M1.0 *0.25 M1.1 *0.25 M1.2 *0.25 M1.4 *0.3 M1.6 *0.35 M1.7 *0.35 M1.8 *0.35 M2.0 *0.4 M2.2 *0.45 M2.3 *0.4 M2.5 *0.45 M2.6 *0.45 M3.0 *0.5 M3.5 *0.6 M4.0 *0.7 M4.5 *0.75 M5.0 *0.8 M6.0 *1.0 M7.0 *1.0 M8.0 *1.25 钻头直径 ASP60C 0.75 0.85 0.95 0.10 1.25 1.35 1.45 1.60 1.75 1.90 2.10 2.15 2.50 2.90 3.3 3.8 4.2 5.0 6.0 6.8 Carbide 0.75 0.85 0.95 0.10 1.30 1.40 1.50 1.65 1.80 1.95 2.15 2.20 2.55 2.95 3.4 3.9 4.3 5.1 6.1 6.9 M1.0*0.2 M1.1*0.2 M1.2*0.2 M1.4*0.2 M1.6*0.2 M1.8*0.2 M2.0*0.25 M2.2*0.25 M2.5*0.35 M3.0*0.35 M3.5*0.35 M4.0*0.5 M4.5*0.5 M5.0*0.5 M5.5*0.5 M6.0*0.75 M7.0*075 M8.0*1.0 M8.0*0.75 M9.0*1.0 M9.0*0.75 公制细牙螺纹 螺纹代号 钻头直径 ASP60C 0.80 0.90 1.00 1.20 1.40 1.60 1.75 1.95 2.20 2.70 3.20 3.50 4.00 4.5 5.00 5.30 6.30 7.00 7.30 8.00 8.30 Carbide 0.80 0.90 1.00 1.20 1.40 1.60 1.75 2.00 2.20 2.70 3.20 3.55 4.05 4.55 5.05 5.35 6.35 7.10 7.35 8.10 8.35 螺纹代号 M24*1.5 M24*1.0 M25*2.0 M25*1.5 M25*1.0 M26*1.5 M27*2.0 M27*1.5 M27*1.0 M28*2.0 M28*1.5 M28*1.0 M30*3.0 M30*2.0 M30*1.5 M30*1.0 M32*2.0 M32*1.5 M33*3.0 M33*2.0 M33*1.5 钻头直径 ASP60C 22.5 23.0 23.0 23.5 24.0 24.5 25.0 25.5 26.0 26.0 26.5 27.0 27.0 28.0 28.5 29.0 30.0 30.5 30.0 31.0 31.5 Carbide — — — — — — — — — — — — — — — — — — — — — —