S-91762A140 1/4"-20 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through serrated locking design that bites into mating surfaces to prevent loosening under dynamic loads
• Enhanced corrosion protection with zinc plating that provides durable surface coverage for extended service life in industrial environments
• Optimal thread compatibility with Class 2B thread fit ensuring smooth assembly and reliable engagement with mating components
• Quick installation and removal via standard external hex drive that accommodates common wrenching tools for efficient maintenance
• Reliable performance in demanding applications thanks to robust zinc-plated steel construction that maintains integrity under stress
• Broad industry compliance meeting both RoHS 3 and REACH environmental standards for safe use across regulated sectors
• Standardized dimensions with 7/16" width and 3/16" height ensuring interchangeability and easy replacement in existing assemblies

Professional Applications & Engineering Value

This 1/4"-20 UNC serrated locknut delivers exceptional engineering value in applications where vibration-induced loosening compromises safety and performance. The zinc-plated steel construction provides essential corrosion resistance for outdoor equipment, automotive assemblies, and industrial machinery exposed to harsh environments. The serrated locking mechanism creates permanent resistance to rotational forces, eliminating the need for additional locking devices in vibration-prone applications. With coarse UNC threads and Class 2B thread fit, this fastener ensures rapid installation while maintaining precise tolerances for critical connections. The external hex drive design accommodates standard tools, streamlining maintenance procedures in manufacturing, construction, and transportation sectors where reliability is paramount.

Specification Summary & Compliance

This locknut features 1/4"-20 UNC coarse threads with Class 2B thread fit per standard inch system specifications, ensuring dimensional accuracy and compatibility with mating components. The product maintains standard hex nut profile with 7/16" width and 3/16" height dimensions. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental compliance for industrial applications across global markets.