普通螺纹螺距（粗牙、细牙）对照表普通螺纹螺距（粗牙、细牙）对照表螺纹 粗 牙 细 牙 M10.250.2M1.10.250.2M1.60.350.2M20.40.25M2.50.450.35M30.50.35M40.70.5 M50.80.5 M610.75, (0.5) M81.251, 0.75, (0.5) M101.51.25, 1, 0.75, (0.5) M121.751.5, 1.25, 1, (0.75), (0.5) (M14)21.5, 1.25, 1, (0.75), (0.5) M1621.5, 1.25, 1, (0.75), (0.5) (M18)2.52, 1.5, 1.25, 1, (0.75), (0.5) M202.52, 1.5, 1.25, 1, (0.75), (0.5) (M22)2.52, 1.5, 1.25, 1, (0.75), (0.5) M2432, 1.5, 1, (0.75) (M27)32, 1.5, 1, (0.75) M303.53, 2, 1.5, 1, (0.75) (M33)3.5(3), 2, 1.5, 1, (0.75) M3643, 2, 1.5, (1) (M39)43, 2, 1.5, (1) M424.5(4), 3, 2, 1.5, (1) (M45)4.5(4), 3, 2, 1.5, (1) M485(4), 3, 2, 1.5, (1) (M52)5(4), 3, 2, 1.5, (1) M565.54, 3, 2, 1.5, (1) (M60)5.54, 3, 2, 1.5, (1) M6464, 3, 2, 1.5, (1) (M68)64, 3, 2, 1.5, (1) M7264, 3, 2, 1.5, (1) (M76)64, 3, 2, 1.5, (1) M8064, 3, 2, 1.5, (1)。