S-90640A150 3/8"-24 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance with nylon insert locking technology that maintains secure fastening in high-motion environments
• Enhanced corrosion protection through zinc-plated steel construction for extended service life in harsh industrial conditions
• Precision thread engagement with Class 2B fine UNF threads ensuring reliable, consistent performance in critical applications
• High-temperature capability with nylon insert rated to 220°F for thermal stability in demanding operating environments
• Easy installation and removal using standard external hex drive design compatible with common wrench tools
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial applications
• Optimal dimensional compatibility with standard 9/16" width and 29/64" height for seamless integration into existing assemblies

Professional Applications & Engineering Value

This 3/8"-24 UNF nylon insert lock nut delivers exceptional engineering value through its zinc-plated steel construction and advanced locking mechanism. The nylon insert creates consistent friction against mating threads, effectively preventing loosening from vibration and thermal cycling - a critical solution for automotive, machinery, and aerospace applications where vibration resistance is paramount. The fine UNF thread profile with Class 2B tolerance ensures precise fitment in high-stress assemblies, while the external hex drive facilitates quick installation with standard tools. Rated to withstand temperatures up to 220°F, this lock nut maintains its locking performance across diverse industrial environments, from manufacturing equipment to electrical enclosures, providing reliable fastening security where traditional nuts would fail.

Specification Summary & Compliance

This lock nut features 3/8"-24 UNF fine threads with Class 2B thread fit for precision engagement, manufactured to standard dimensions of 9/16" width and 29/64" height. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and material safety. The right-hand thread direction and external hex drive style follow industry-standard specifications for compatibility with existing fastener systems and tooling.