十字槽盘头螺钉和外锯齿锁紧垫圈组合件
Cross recessed pan head screw andserrated lock washer external teeth assemblies
1988-04-16
GB/T 9074.3-1988
十字槽盘头螺钉和弹簧垫圈组合件
Cross recessed pan head screw and single coil spring lock washer assemblies
1988-04-16
QJ 20040.1-2011
不锈钢螺钉垫圈组合件 第1部分:十字槽盘头螺钉、弹簧垫圈和平垫圈
Stainless steel screw and washer assemblies-Part 1:Cross recessed pan head screw,single coil spring lock washer and plain washer