... 8,9.8........ WAVE PLATE HEAD SCREW,DOUBLE HEAD SCREW,KNURLED HEAD SCREW A good non-standard fastenerS manufacturer ... tapping threads "A","AB", Threads for chipboard screw,wood screw,drywall screw;Type "M","UNC","UNF","BSW"threads for ... 1)Quantity in a plastic bag as per Screw's Size; 2)it is packed 22kg-25kg ... more than 20 years experiences in screw,bolt,nut,washer,rivet, stud, pin,wrench and so on .2 ...