... -standerd parts Item Nostainless steel self drilling screws Materialsiron,aluminum,steel,copper,plastic,carbon steel,nylon,bronze,solder alloy,HSS,tool ... ,electroplating,spraying,painting and so onBusiness scopeCNC center machining,drilling,turning,grinding,tapping,mould design and processing,casting,sheet ... receive your valued enquiries with detail specification. stainless steel self drilling screws