Double End Bolt,Special 1.ISO,ANSI,CE,JIS,DIN,BS& ... 3.Grade:4.8 ,6.8,8.8,9.8... Double End Bolt,Special Head Bolt,Bolt Maker ,M6 Bolt Dimensions1 ... some other manufacturer's products,it is not easy to slide when fasteners match with machine,furniture ,drywall ,wood and so ...