... ,wood screw,drywall screw;Type "M","UNC","UNF","BSW"threads for Machine threads.Head typesHexagon head,Mushroom head,Pan head,Countersunk head,Bugle head,Oval head,Hex flange head,Round head ... ,Ball head,Button head...Socket typesPhillip type,Pozi type,Eleven type,hexagonal type,Torx type,trangle type,slotted ...