S-90715A140 5/16"-24 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through precision nylon insert locking that maintains secure fastening even under dynamic loads
• Excellent corrosion resistance with 316 stainless steel construction, ideal for harsh environments and chemical exposure
• Reliable high-temperature performance with nylon insert rated for secure locking up to 220°F (104°C)
• Precise thread engagement with Class 2B UNF fine threads ensuring consistent, reliable fastening in critical applications
• Easy installation and removal with standard external hex drive design compatible with common wrenching tools
• Environmental compliance assurance meeting RoHS 3 and REACH standards for restricted substance control
• Dimensional consistency with 1/2" hex width and 11/32" height for uniform performance across applications

Professional Applications & Engineering Value

This 5/16"-24 UNF nylon insert locknut delivers exceptional engineering value in applications where vibration resistance and corrosion protection are critical. The 316 stainless steel construction provides superior resistance to chlorides and industrial chemicals, while the precision nylon insert creates consistent locking force that prevents loosening under continuous vibration. The UNF fine thread configuration offers enhanced load distribution compared to coarse threads, making it ideal for precision equipment, automotive assemblies, marine hardware, and processing machinery where fine-thread fastening solutions require reliable performance. The combination of material durability and mechanical locking ensures long-term reliability in demanding environments where temperature fluctuations and corrosive elements would compromise standard fasteners.

Specification Summary & Compliance

This locknut features Class 2B thread fit per UNF standards, ensuring precise dimensional accuracy and consistent thread engagement. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming restriction of hazardous substances. The external hex drive design provides standard wrench compatibility, while the right-hand 5/16"-24 UNF fine thread configuration delivers optimal performance in applications requiring fine-pitch fastening solutions.