Double End Bolt,Special 1.ISO,ANSI,CE,JIS,DIN,BS& ... :4.8 ,6.8,8.8,9.8... Double End Bolt,Special Head Bolt,Bolt Maker ,M6 Bolt Dimensions1.What ... demand .SizeThe Diameter :Generally,it is M2-M12 in our fasteners.The length :ordinary,It is less than 300mm .Threads/ ScrowsType ... head,Countersunk head,Bugle head,Oval head,Hex flange head,Round head,Ball head,Button head...Socket typesPhillip type,Pozi type ...