带去屑槽六角螺栓平垫波垫组合 
Hexagon bolt with removing scraps slot, plain washer and spring washer assembly 
Hexagon Bolt with Spring Washer and Plain Washer Assembly 
Hexagon bolts and spring washers assemblies 
Hexagon Bolt with Plain Washer Assembly 
带导向头六角螺栓平垫组合 
带导向头涂胶六角螺栓平垫组合 
Hexagon head coating bolt with pilot recess and plain washer assemblies 
Hexagon Bolt with Cotterway and Plain Washer Assembly 