A.0.8~1.0 B.1.2~1.5 C.1.3~1.5 D.1.2~1.8
A.10-15 B.12-20 C.18-28 D.20-30
A.螺桿和聯(lián)接體 B.螺母和搬手 C.螺母和螺桿 D.搬手和螺桿