... SCREW AND FASTENERS ,FASTERNERS NUT BOLTS SCREWS, SOCKET HEAD CAP SCREW .A good non-standard fastenerS manufacturer ... are available.such as :Self tapping threads "A","AB", Threads for chipboard screw,wood screw,drywall ... us?Rich Experience ,good technology1. We are a professional manufacturer with more than 20 years ... experiences in screw,bolt,nut,washer,rivet, stud, pin,wrench and so ...