S-90392A067 3/4"-10 Locknuts

Key Features & Benefits at a Glance

• Vibration-resistant performance through center lock distorted thread design that maintains secure fastening under extreme conditions
• Exceptional strength and durability with Grade 8 classification, suitable for high-stress industrial applications
• Corrosion protection provided by zinc-plated steel construction for extended service life
• Reliable left-hand thread engagement with UNC coarse spacing and Class 2B fit for precise mating with matching components
• Easy installation and removal using standard external hex drive with 1-1/8" width for common tool compatibility
• Environmental compliance assurance meeting both REACH and RoHS 3 standards for industrial safety
• Optimized for reverse-thread applications where standard right-hand threads would loosen under rotational forces

Professional Applications & Engineering Value

This Grade 8 heavy-duty locknut with center lock distorted thread technology addresses critical vibration-induced loosening challenges in industrial machinery, automotive systems, and heavy equipment. The zinc-plated steel construction provides essential corrosion resistance while maintaining the high tensile strength required for demanding applications. The left-hand UNC coarse thread configuration is specifically engineered for components subject to counter-clockwise rotational forces, preventing unintended disassembly in conveyors, rotating shafts, and power transmission systems. The distorted thread locking mechanism creates consistent friction along the mating surface, eliminating the need for additional locking devices and reducing assembly time while ensuring reliable performance in high-vibration environments.

Specification Summary & Compliance

This 3/4"-10 UNC left hand thread locknut features Class 2B thread fit tolerance for precise engagement and coarse thread spacing for rapid installation. Manufactured to Grade 8 strength standards with standard external hex drive (1-1/8" width, 41/64" height). Fully compliant with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental regulations, ensuring safe use across industrial sectors while meeting international quality and safety requirements for heavy-duty fastening applications.