S-90636A051 3/8"-24 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance with center lock distorted thread design that maintains secure fastening under extreme conditions
• Exceptional strength and durability from Grade 8 steel construction, capable of handling heavy-duty industrial applications
• Enhanced corrosion protection through zinc yellow-chromate plating that extends service life in harsh environments
• Precise thread engagement with UNF fine thread configuration and Class 2B fit for reliable performance in critical assemblies
• Easy installation and removal using standard external hex drive design compatible with common wrench tools
• Consistent locking performance through right-hand thread direction and distorted thread technology that prevents loosening
• Optimized dimensional stability with 9/16" width and 21/64" height for proper fit in standard applications

Professional Applications & Engineering Value

This Grade 8 heavy-duty locknut with center lock distorted thread technology addresses critical vibration-induced loosening challenges in industrial and automotive applications. The UNF fine thread configuration provides superior thread engagement in high-stress environments, while the zinc yellow-chromate plated steel construction delivers exceptional corrosion resistance for extended service life in demanding conditions. Engineered for critical assemblies where reliable locking performance is non-negotiable, this external hex locknut offers predictable, repeatable fastening solutions for machinery, equipment, and structural applications subject to constant vibration and dynamic loads. The distorted thread design creates consistent interference that maintains clamp load without compromising reusability.

Specification Summary & Compliance

This 3/8"-24 UNF locknut features Class 2B thread fit precision and complies with UNF fine thread standards. Manufactured from Grade 8 steel with zinc yellow-chromate plating for corrosion protection, the nut meets industrial strength requirements for heavy-duty applications. The center lock distorted thread technology provides reliable vibration resistance while maintaining compatibility with standard right-hand thread fasteners. Dimensions include 9/16" width and 21/64" height for consistent performance across applications requiring external hex drive installation.