英制,美制.公制螺纹底孔对照表

常用规格 （公制）M1.2×0.25 M2.5×0.45 M6×0.75 M10×0.75M1.4×0.3 M2.6×0.45 M6×1 M10×1M1.6×0.35 M3×0.5 M7×0.75 M10×1.25M1.7×0.25 M3×0.6 M7×1 M10×1.5M1.7×0.35 M3.5×0.6 M8×0.75 M11×1M1.8×0.35 M4×0.5 M8×1 M11×1.5M2×0.4 M4×0.7 M8×1.25 M12×1M2.2×0.45 M5×0.5 M9×1 M12×1.25M2.3×0.45 M5×0.8 M9×1.25 M12×1.5常用规格 （美制）0-80UNF 5-40UNC 10-32UNF 5/16〃-32UNEF1-64UNC 5-44UNV 12-24UNC 3/8〃-16UNC1-72UNF 6-32UNC 12-28UNF 3/8〃-24UNF2-56UNC 6-40UNF 12-32UNEF 3/8〃-32UNEF2-64UNF 5/32〃-32UNC 1/4〃-20UNC 7/16〃-14UNC