Special Offer 3/8″-16 Lock Nuts Serrated Flange Case Hardened Steel Black Oxide (1000 / Pkg.)

Hex Lock Nuts Serrated Flange Case Harden Steel Black Oxide 3/8″-16 delivers robust fastening for demanding assemblies. This hex lock nut combines a serrated flange with a case-hardened steel body and a black oxide finish for durability, corrosion resistance, and a clean, professional appearance.

Designed for high-load applications, the serrated flange helps grip the mating surface to reduce loosening from vibration, while the lock-nut design ensures a secure hold across rough or demanding environments. The 3/8″-16 UNC thread makes it a versatile choice for a wide range of projects, from automotive upgrades to machinery assembly.

Key Features

Material: Case-hardened steel for increased hardness and wear resistance.

Finish: Black oxide for corrosion resistance and a sleek appearance.

Flange: Serrated flange provides a wide bearing surface and resists loosening.

Thread Size: 3/8″-16 UNC standard coarse thread.

Type: Hex lock nut with integrated flange for quick, secure installation.

Applications

Ideal for automotive, industrial, and equipment assembly where a reliable lock nut is required and space constraints favor a flange design.

Specifications

Thread: 3/8″-16 UNC

Material: Case-hardened steel

Finish: Black oxide

Flange: Serrated