... 12L14,12156. Aluminum: Al6061, Al60637.OEM according to your requestProducts Availablebolts, screws, nuts, rivets, stem nuts, shafts(axles, ... , yellow passivation, gold passivation, galvanizing, satin, etc.Processing Methodcnc machining, turning, milling, drilling, grinding, broaching, ... stamping, thread cutting tools, sheet metal production processing factory. 5.can assure the mechanical properties ...