... ,8.8,9.8... BIG HEAD SCREW,WASHER HEAD WOO SCREW,SCREW .A good non-standard fastenerS manufacturer for ... tapping threads "A","AB", Threads for chipboard screw,wood screw,drywall screw;Type "M","UNC","UNF","BSW"threads for Machine threads ... head...Socket typesPhillip type,Pozi type,Eleven type,hexagonal type,Torx type,trangle type,slotted point type,square type,Combined type...FinishZinc plated,Nickel ...