S-91831A009 8-32 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through nylon insert locking technology that maintains secure fastening in high-motion environments
• Excellent corrosion resistance with 18-8 stainless steel construction for extended service life in harsh conditions
• Reliable high-temperature performance with nylon insert rated to 220°F (104°C) for thermal stability
• Quick installation and removal with standard external hex drive design and UNC coarse threading
• Precise thread engagement with Class 2B fit ensuring consistent performance and reduced cross-threading risk
• Environmental compliance assurance meeting RoHS 3 and REACH standards for global manufacturing applications
• Optimized dimensions (11/32" width × 15/64" height) for space-constrained assemblies without compromising strength

Professional Applications & Engineering Value

This 8-32 nylon insert lock nut delivers critical vibration-resistant performance for demanding industrial applications where loosening under dynamic loads poses significant safety and maintenance concerns. The 18-8 stainless steel construction provides inherent corrosion resistance, making it ideal for outdoor equipment, marine environments, and chemical processing facilities. The UNC coarse thread design ensures rapid installation in production environments while the nylon insert creates consistent friction locking that outperforms mechanical locking methods in vibration-prone assemblies. With its 220°F temperature rating, this lock nut maintains integrity in engine compartments, motor mounts, and industrial machinery where thermal cycling occurs. The external hex drive allows for standard tooling compatibility, streamlining maintenance procedures across diverse equipment platforms.

Specification Summary & Compliance

This lock nut features 8-32 UNC coarse threading with Class 2B fit for precise thread engagement and dimensional accuracy. Manufactured from 18-8 stainless steel with a standard hex profile (11/32" across flats, 15/64" height) and right-hand thread direction. The nylon insert locking mechanism provides reliable vibration resistance while maintaining compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring suitability for regulated industries and international markets.