S-90715A122 7/8"-14 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through nylon insert locking technology that maintains secure fastening in high-motion environments
• Exceptional corrosion resistance with 316 stainless steel construction for demanding industrial and marine applications
• High-temperature capability with nylon insert rated to 220°F (104°C) for thermal cycling environments
• Precise thread engagement with Class 2B UNF fine threads ensuring reliable, consistent clamping force
• Easy installation and removal using standard wrench tools with external hex drive design
• Environmental compliance meeting RoHS 3 and REACH standards for global industrial use
• Durable locking performance with reusable nylon insert that maintains locking capability through multiple installations

Professional Applications & Engineering Value

This 316 stainless steel nylon insert locknut delivers critical vibration resistance in demanding applications where secure fastening is paramount. The UNF fine thread configuration provides enhanced thread engagement and superior clamping force distribution compared to coarse threads, making it ideal for precision equipment, industrial machinery, and automotive assemblies. The nylon insert locking mechanism creates consistent friction against the mating bolt, effectively preventing loosening from dynamic loads and thermal expansion. With its 220°F temperature rating and corrosion-resistant 316 stainless steel construction, this locknut performs reliably in harsh environments including chemical processing, marine applications, and outdoor equipment where moisture and temperature fluctuations would compromise standard fasteners.

Specification Summary & Compliance

This locknut features 7/8"-14 UNF fine threads with Class 2B thread fit tolerance for precise engagement, measuring 1-1/4" across flats and 63/64" in height. Manufactured to industry standards for external hex drive locknuts with nylon insert locking technology. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and unrestricted use in global industrial markets.