Machine Part, Fastener, Bolt manufacturer / supplier in China, offering High Precision OEM/ODM Zinc Plated 3/8-16" Slip-on Lock Nut Made in China, High Precision Custom Zinc Plated 3/8-16" Slip-on Lock Nut, 5/8-11" Unc Threaded Insert Quick Installation Galvanized Square Nuts Slip-on Lock Nuts and so on.