... Bronze,Iron,Aluminum,Carbon steel,Alloy steel,silicon bronze,etc.Head/Tread stylesAccording client's requiresCoating/Surface treatmentZinc,Tin,Sn/ ... self tapping screws, self drilling screws, set screws, hex socket head cap screws, wood screws.Rivet: solid rivet, blind rivet, pop ... rivet.Nails: roofing nails, twist nails, double head nails.Our company is the TOP SUPPLIER for Beijing 2008 ...