Hex Lock Nuts Two Way Steel Black Zinc & Wax 5/16-18 are engineered fasteners designed to deliver secure, vibration-resistant locking for a wide range of applications. Crafted from durable steel with a protective black zinc finish and a wax lubrication, these nuts combine strength, corrosion resistance, and smooth operation.

Key features

• Two Way locking action: Provides reliable torque retention in high-vibration environments, effective in tightening or loosening directions.
• Material: Premium steel for high strength and long-lasting performance.
• Finish: Black zinc with a wax coating for enhanced corrosion resistance and reduced friction during assembly.
• Thread size: 5/16-18 UNC (Unified National Coarse).
• Application versatility: Suitable for automotive, machinery, equipment assembly, outdoor furniture, and general structural fastenings.

Specifications

• Thread size: 5/16-18 UNC
• Material: Steel
• Finish: Black zinc with wax coating
• Type: Hex lock nut, two-way locking design

Why choose these hex lock nuts

Designed to resist loosening from vibrations and dynamic loads, these nuts provide reliable performance in challenging conditions. The black zinc finish delivers durable corrosion resistance, while the wax coating assists with installation, reduces galling, and promotes smooth thread engagement. Whether youre building machinery, outfitting a vehicle, or assembling outdoor equipment, these hex lock nuts offer dependable holding power and long service life.

For best results, pair these nuts with compatible washers and bolts that meet the same thread specification. Always torque to the manufacturers recommendations to maximize locking performance and prevent damage to mating components.