S-90652A065 1"-8 Locknuts

Key Features & Benefits at a Glance

• Vibration-resistant locking performance with nylon insert that maintains secure fastening under dynamic loads
• Enhanced corrosion protection through zinc-plated steel construction for extended service life in harsh environments
• Superior torque distribution via extra-wide thin hex profile that reduces surface pressure and prevents damage during installation
• High-temperature compatibility with nylon insert rated for continuous operation up to 250°F (121°C)
• Precision threading with Class 2B fit ensuring smooth installation and consistent clamping force
• Industry-standard compatibility with 1"-8 UNC coarse threads for reliable interchangeability across equipment
• External hex drive design enabling standard wrench access and efficient installation in confined spaces

Professional Applications & Engineering Value

This nylon insert locknut delivers critical vibration resistance for industrial machinery, automotive assemblies, and structural applications where loosening under dynamic loads poses safety risks. The zinc-plated steel construction provides essential corrosion protection in manufacturing environments exposed to moisture and chemicals. Engineers specify the extra-wide thin hex profile to distribute clamping forces more effectively across wider surfaces, preventing material deformation in soft substrates while accommodating standard wrenching tools. The 1"-8 UNC coarse thread configuration ensures rapid installation and reliable performance in high-vibration equipment, with the nylon insert creating consistent friction lock that maintains preload without damaging mating threads. This combination addresses common failure points in heavy-duty applications while simplifying maintenance procedures.

Specification Summary & Compliance

Manufactured to precise Class 2B thread fit tolerances for consistent installation performance with standard UNC coarse threads (1"-8). The external hex drive accommodates standard industrial wrenching tools. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and workplace safety. Dimensions: 1 5/8" width × 57/64" height with right-hand threading orientation.