S-90047A150 5/8"-18 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through center lock distorted thread design that maintains secure fastening under dynamic loads
• Excellent corrosion protection with 18-8 stainless steel construction for long-lasting performance in harsh environments
• Precise thread engagement with Class 2B fit ensuring reliable installation and consistent locking performance
• Enhanced installation efficiency with standard external hex drive profile compatible with common wrenching tools
• Optimized for fine-thread applications using 5/8"-18 UNF threads for improved tension control and reduced loosening risk
• Environmental compliance assurance meeting RoHS 3 and REACH standards for global industrial use
• Dimensional reliability with 15/16" width and 35/64" height for consistent fitment across applications

Professional Applications & Engineering Value

This 18-8 stainless steel locknut delivers critical vibration resistance where conventional fasteners fail. The center lock distorted thread technology creates controlled interference along the UNF fine threads, generating consistent prevailing torque that prevents spontaneous loosening in high-vibration environments. Engineered with Class 2B thread fit, this external hex locknut ensures precise engagement while maintaining installation efficiency. The corrosion-resistant stainless steel construction makes it ideal for industrial machinery, automotive assemblies, and outdoor equipment where both environmental durability and reliable locking performance are essential. The fine 5/8"-18 UNF thread provides superior tension control compared to coarse threads, making it particularly valuable in precision equipment and critical structural applications.

Specification Summary & Compliance

This distorted thread locknut features precise Class 2B thread fit per UNF standards with right-hand 5/8"-18 fine threading. The manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring global compliance for industrial applications. Dimensional specifications include 15/16" width across flats and 35/64" height, maintaining consistent quality across production batches for reliable performance in demanding environments.