简体中文标题：六角头螺母.1型。产品等级A和B。

English Name:Hexagon nuts, style 1. Product grades A and B.

youdao

钢结构用高强度大六角头螺栓，大六角螺母，垫圈技术条件。

Specification of high strength bolts with large hexagon head, large hexagon nuts, plain washers for steel structures.

youdao

钢结构用高强度大六角头螺栓，大六角螺母，垫圈技术条件。

Specification of high strength bolts with large hexagon head, large hexagon nuts, plain washers for steel structures.

youdao