Serrated Flange Lock Nuts

Integrally cold-forged lock nuts with anti-slip serrations on the flange surface to increase friction and prevent loosening. Carbon steel and stainless steel materials are optional, with galvanized surface for rust resistance. We offer complete standard specifications and customized processing according to drawings, widely applied for fastening automobiles, mechanical equipment and hardware brackets.

Serrated flange lock nuts are integrally cold-forged for robust construction and high-precision threads. Annular anti-slip serrations on the flange boost friction with mating surfaces to stop nut loosening caused by persistent equipment vibration.

We supply galvanized carbon steel and stainless steel versions. Galvanized carbon steel balances cost and basic rust resistance for ordinary use, whereas stainless steel withstands moisture and corrosion for outdoor and chemical environments. Standard metric and imperial sizes are in stock, and custom dimensions including thread pitch and flange thickness are available per your drawings or samples.

Every batch passes three rigorous inspections covering thread tolerance, serration completeness and coating finish for consistent quality. These nuts are extensively used in auto parts, automated machinery, metal brackets and general hardware assemblies, delivering dependable anti-loose fastening solutions across various industries.

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