螺纹代号 No.1-64UNC No.2-56UNC No.3-48UNC No.4-40UNC No.5-40UNC No.6-32UNC No.8-32UNC No.10-24UNC No.12-24UNC 1/4-20UNC 5/16-18UNC 3/8-16UNC 7/16-14UNC 1/2-13UNC 9/16-12UNC 5/8-11UNC 3/4-10UNC 7/8-9UNC 1-8UNC 11/8-7UNC 螺纹代号 钻头直径 ASP60C 1.55 1.80 2.10 2.30 2.60 2.80 3.40 3.90 4.50 5.10 6.60 8.00 9.40 10.80 1220 13.60 1650 19.50 22.20 25.00 Carbide — — — — — — — — — — — — — — — — — — — — 钻头直径 M9.0 *1.25 M10.0 *1.5 M11.0 *1.5 M12.0 *1.75 M14.0 *2.0 M16.0 *2.0 M18.0 *2.5 M20.0 *2.5 M22.0 *2.5 M24.0 *3.0 M27.0 *3.0 M30.0 *3.5 M33.0 *3.5 M36.0 *4.0 M39.0 *4.0 M42.0 *4.5 M45.0 *4.5 M48.0 *5.0 7.8 8.5 9.5 10.3 12.0 14.0 15.5 17.5 19.5 21.0 24.0 26.5 29.5 32.0 35.0 37.5 40.5 43.0 7.9 8.7 9.7 10.5 12.2 14.2 15.7 17.7 19.7 — — — — — — — — — M10.0*1.25 M10.0*1.0 M10.0*0.75 M11.0*1.0 M11.0*0.75 M12.0*1.5 M12.0*1.25 M12.0*1.0 M14.0*1.5 M14.0*1.0 M15.0*1.5 M15.0*1.0 M16.0*1.5 M16.0*1.0 M17.0*1.5 M17.0*1.0 M18.0*2.0 M18.0*1.5 M18.0*1.0 M20*2.0 M20*1.5 M20*1.0 M20*1.0 M22*1.5 M22*1.0 880 9.00 9.30 10.0 10.3 10.5 10.8 11.0 12.5 13.0 13.5 14.0 14.5 15.0 15.5 16.0 16.0 16.5 17.0 18.0 18.5 19.0 20.0 20.58 21.0 8.90 9.10 9.35 10.1 10.3 10.7 10.9 11.1 12.7 13.1 13.7 14.1 14.7 15.1 15.7 16.1 16.3 16.7 17.1 18.8 18.7 19.1 — — — M35*1.5 M36*3.0 M36*2.0 M36*1.5 M38*1.5 M39*3.0 M39*2.0 M39*1.5 M40*3.0 M40*2.0 M40*1.5 M42*4.0 M42*3.0 M42*2.0 M42*1.5 M45*4.0 M45*3.0 M45*2.0 M45*1.5 M48*4.0 M48*3.0 M48*2.0 M48*1.5 M50*3.0 M50*2.0 33.5 33.0 34.0 34.5 36.5 36.0 37.0 37.5 37.0 38.0 38.5 38.0 39.0 40.0 40.5 41.0 42.0 43.0 43.5 44.0 45.0 46.0 46.5 47.0 48.0 — — — — — — — — — — — — — — — — — — — — — — — — — No.0-80UNF No.1-72UNF No.2-64UNF No.3-56UNF No.4-48UNF No.5-44UNF No.6-40UNF No.8-36UNF No.10-32UNF No.12-28UNF 1/4-28UNF 5/16-24UNF 3/8-24UNF 7/16-20UNF 1/2-20UNF 9/16-18UNF 5/8-18UNF 3/4-16UNF 7/8-14UNF 1-12UNF ASP60C 1.25 1.55 185 2.10 2.40 2.70 2.90 3.50 4.10 4.60 5.50 6.90 8.50 9.90 11.50 12.90 14.50 17 20.50 23.20 Carbide — — — — — — — — — — — — — — — — — — — — M24*2.0 22.0 — M50*1.5 48.5 —