S-90392A050 1/2"-13 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through center lock distorted thread technology that maintains clamping force in high-stress applications
• Exceptional strength and durability with Grade 8 classification, ensuring reliable performance in heavy-duty industrial environments
• Enhanced corrosion protection from zinc plating that extends service life in demanding conditions
• Secure left-hand thread locking prevents loosening in reverse rotation applications where standard nuts would fail
• Precise thread engagement with Class 2B fit and UNC coarse threads for easier assembly and consistent performance
• Industry-standard compatibility with 3/4" hex profile and external drive style for standard tool usage
• Regulatory compliance assurance meeting both REACH and RoHS 3 standards for environmental and safety requirements

Professional Applications & Engineering Value

This Grade 8 heavy-duty locknut with center lock distorted thread technology addresses critical vibration-induced failure points in industrial machinery and equipment. The zinc-plated steel construction provides essential corrosion resistance while maintaining the high tensile strength required for demanding applications. The left-hand thread configuration is specifically engineered for components requiring reverse-thread security, such as rotating shafts, mixing equipment, and specialized machinery where conventional right-hand threads would naturally loosen. The distorted thread locking mechanism creates consistent friction along the thread engagement, eliminating the need for additional locking devices and reducing assembly time. With 1/2"-13 UNC coarse threading, this locknut offers excellent engagement in high-vibration environments common in construction, manufacturing, and heavy equipment applications.

Specification Summary & Compliance

This industrial locknut features precise Class 2B thread fit with UNC coarse thread specifications (1/2"-13) and left-hand thread direction. The external hex drive style with 3/4" width and 7/16" height ensures compatibility with standard tools. Manufactured to meet Grade 8 strength classification requirements, the nut complies with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental standards, ensuring safe use in industrial applications while maintaining superior mechanical properties.