... Hex Socket, Torx, Rice character type, One Way etc.MaterialCarbon steel, stainless steel, SS-304, SS-302, Aluminum, Brass, Bronze, medium ... carbon alloy steel etc.Surface TreatmentZn-plating, Ni-plating, Cr-plating, Tin-plating ... in the production of CNC/AUTO lathe, springs, shafts, screws, stamping parts and other metal parts. Our main production modes are ...