... quality 4.Popular in Singapore,Ameica,CanadaOther specification of Copper Mechanical Components : GENERAL TOLERANCE (±mm)CNC Machining 0.005Turning0.005Grinding (Flatness/in2 ... , 440CPrecipitation-Hardening17-4PHSpring SteelC1065, SUS301, SpringAluminumAL1024,AL5052,AL6061,AL6062,AL7075CopperCopper , Brass, BronzePlasticPVC,Bakelite,Derlin, AS Derlin, Acrylic,Anti-Stalic, Acrylic,PC ...