常用螺纹规规格:M1.4*0.3M4.5*0.75M20*2.5M1.6*0.35M5*0.8M22*2.5M1.7*0.35M5*0.9M24*3M1.8*0.35M5.5*0.9M27*3M2*0.4M6*1.0M30*3.5M2.3*0.35M7*1.0M33*3.5M2.3*0.4M8*1.25M36*4M2.5*0.45M9*1.25M39*4M2.6*0.46M10*1.5M42*4.5M3*0.5M11*1.5M45*4.5M3*0.6M12*1.75M48*5M3.5*0.6M14*2M52*5M4*0.4M16*2M52*5.5M4*0.75M18*2.5M60*5.5