1:material:Brass,stainless steel; 2:thread szie:M2,M3,M4,M6,M8; 3:used mobile telephone and any inlay need stable quality with 4:Finished surface:plain,nickle;5: according cusotmer need to design it ;6:we can produce a kinds of barss stud bolt,nut and screw;7:the smples lead-time 3days!8:wecome to visit our web:http://sozn.en.alibaba.com; insert nut/nylon nut/truss head bolt/lock nut