S-90675A255 12-24 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through integrated external-tooth lock washer that maintains clamping force under dynamic loads
• Enhanced corrosion protection with zinc-plated steel construction for extended service life in harsh industrial environments
• Reliable thread engagement with Class 2B thread fit ensuring consistent performance and easy assembly
• Optimized torque transmission through standard external hex drive design for secure installation with common tools
• Industry-standard compatibility with 12-24 UNC coarse threads for broad application across equipment and machinery
• Secure locking performance from the steel external-tooth washer that bites into mating surfaces to prevent loosening
• Environmental compliance assurance meeting both REACH and RoHS 3 standards for safe, sustainable manufacturing

Professional Applications & Engineering Value

This 12-24 UNC locknut with external-tooth lock washer addresses critical vibration-induced loosening challenges in industrial equipment and machinery. The zinc-plated steel construction provides essential corrosion resistance for demanding environments while maintaining structural integrity. The coarse thread design ensures rapid assembly and disassembly in maintenance operations, reducing downtime. Particularly valuable in automotive, manufacturing, and heavy equipment applications, this external hex locknut delivers reliable performance where constant motion and stress would compromise standard fasteners. The integrated lock washer mechanism creates positive mechanical locking without requiring additional components, streamlining inventory and installation processes for industrial maintenance teams.

Specification Summary & Compliance

This locknut features 12-24 UNC coarse threads with Class 2B thread fit for consistent engagement and proper clearances. Dimensions include 7/16" width across flats and 3/16" height for standard wrench compatibility. The external-tooth lock washer measures 0.5" OD and is manufactured from steel for durable locking action. The product fully complies with REACH (EC 1907/2006) regulations and RoHS 3 (2015/863/EU) directives, ensuring environmental safety and regulatory compliance for industrial applications worldwide.