S-90652A029 1/4"-20 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance with nylon insert technology that maintains locking performance in high-stress environments
• Enhanced durability and corrosion protection through zinc-plated steel construction for extended service life
• Easy installation and removal with external hex drive design and extra-wide thin profile requiring less torque
• Reliable performance at elevated temperatures with nylon insert rated for maximum 250°F operating conditions
• Precise thread engagement with Class 2B UNC coarse threads ensuring consistent fit and reduced cross-threading risk
• Optimized space utilization through extra-wide thin hex profile providing secure grip in confined applications
• Compliance with environmental standards meeting RoHS 3 and REACH requirements for global industrial use

Professional Applications & Engineering Value

This 1/4"-20 nylon insert lock nut delivers exceptional engineering value in demanding industrial environments where vibration-induced loosening compromises equipment reliability. The zinc-plated steel construction provides essential corrosion resistance while the nylon insert locking mechanism creates consistent friction against mating threads, effectively preventing spontaneous loosening under dynamic loads. The extra-wide thin hex profile offers improved wrench access and torque application in space-constrained assemblies, making it ideal for automotive components, machinery frames, electrical enclosures, and conveyor systems. With UNC coarse threads and Class 2B thread fit, installation is streamlined while maintaining secure fastening integrity across repeated maintenance cycles.

Specification Summary & Compliance

This locknut features precision 1/4"-20 UNC coarse threads with Class 2B thread fit for consistent engagement and right-hand threading orientation. The dimensional specifications include 1/2" width across flats and 9/32" height profile. Manufacturing complies with industry standards for nylon insert locknuts with temperature rating to 250°F. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial applications requiring restricted substance control.