... steel,brass,nylon 2)Standards:DIN,ANS,BS,GB,NON-STANDARD We can supply many kinds of screws and bolts with ... Standard GB,ANSI,DIN.All specification and treatmeat can do it ... = new AE.run.minisite.productShow(); oProductShow.init( { 'aImgSrc': aBigImageSrc } ); } )(); self drilling screws,self tapping screws,drywall screws,machine screws