Semi hollow rivet 1)Material: Carbon,stainless steel 2)Size: Un- ... )Finishing:ZW,ZB,ZY, ZP.else 4)Tolerance:0.01 Semi hollow rivetMaterial :BrassSize:M3*20Head type:TrussDrive type:Hex socketThread ... we can make? Head diametre rangeThe largest is 35mmMaterialsCarbon steel,Brass or copper,aluminum,stainless steelSurface FinishNickel plated,white zinc.black ...