... passivating,Ni-Plated,Zn-plated etc brass forging precision knurled brass nutsSpecificationsknurled nuts 1. smooth surface 2 ... Main products:Nonstandard fasteners(nut,screw,bolt) and precision turning partsMaterial Available:Stainless steel:SUS303,SUS304,SUS316, ... machine, CNC lathe machineCertification:ISO9001:2008QC Control:100% Inspection before shipping brass forging precision knurled brass nuts