... 4) prompt delivery 5) non-standerd parts Item Nomechanical bolts fastenerMaterialsiron,aluminum,steel,copper,plastic,carbon steel,nylon,bronze,solder ... CVD coating,galvanized,electroplating,spraying,painting and so onBusiness scopeCNC center machining,drilling,turning,grinding,tapping,mould design and processing, ... we receive your valued enquiries with detail specification. mechanical bolts fastener