S-92501A529 1/2"-13 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through distorted top lock technology that maintains secure fastening in high-motion environments
• Enhanced corrosion protection with zinc-plated steel construction for extended service life in industrial conditions
• Reliable coarse thread engagement with 1/2"-13 UNC threading for quick installation and reduced cross-threading risks
• Consistent performance meeting ASTM Grade C strength requirements for heavy-duty applications
• Secure Class 2B thread fit ensuring proper mating with male threads while maintaining disassembly capability
• Standard external hex drive for compatibility with common wrenching tools and straightforward installation
• Environmental compliance with RoHS 3 and REACH regulations for safe use across regulated industries

Professional Applications & Engineering Value

This zinc-plated steel locknut addresses critical vibration-induced loosening challenges in industrial machinery, automotive assemblies, and structural frameworks. The distorted thread locking mechanism at the top section creates consistent friction against mating threads, eliminating the need for secondary locking devices while maintaining UNC coarse thread compatibility. The external hex drive profile ensures straightforward installation with standard tools, reducing assembly time in production environments. Engineered with ASTM Grade C material strength, this solution provides reliable performance in heavy-load applications where vibration resistance and thread integrity are paramount for operational safety and reduced maintenance intervals.

Specification Summary & Compliance

This locknut features 1/2"-13 UNC coarse threads with Class 2B thread fit tolerances, ensuring proper engagement with standard male threads. Manufacturing complies with ASTM Grade C strength specifications for consistent mechanical performance. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements, confirming adherence to environmental and safety standards for industrial components. Physical dimensions include 3/4" width across flats and 7/16" height for standardized application across compatible assemblies.