... polishing, passivating,Ni-Plated,Zn-plated etc brass forging precision knurled brass nutsSpecificationsknurled nuts 1. smooth surface 2.precise ... etc. Aluminum: AL6061-T6,6063-T6,AL7075 etc. Brass: C3604(C38000),C3602(36000),/Hpb59-3 etc. Plastic: ... Cr-Plated,Anodizing,etc. According to your requirementPrecision:+/-0.01~0.05mmProcessing:Turning, machiningProcessing equipments:Automatic Lathe machine, ...