S-94830A565 5/8"-18 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance with Flex-Top locking technology that maintains secure fastening under dynamic loads
• Enhanced corrosion protection through cadmium-plated steel construction for extended service life in harsh environments
• Space-saving thin profile design (13/32" height) ideal for applications with limited clearance without compromising strength
• Precision thread engagement with Class 2B fit ensuring reliable performance in critical assembly applications
• Fine thread configuration (5/8"-18 UNF) provides improved adjustment accuracy and better load distribution
• Easy installation and removal with standard 15/16" external hex drive compatible with common industrial tools
• Right-hand thread direction conforms to standard industrial practices for straightforward implementation

Professional Applications & Engineering Value

This 5/8"-18 UNF thin Flex-Top locknut delivers exceptional engineering value in applications where vibration-induced loosening poses significant reliability concerns. The cadmium-plated steel construction provides robust corrosion resistance for outdoor equipment, automotive assemblies, and industrial machinery exposed to moisture and chemicals. The thin profile design addresses space constraints in compact assemblies while maintaining full locking performance. The Flex-Top locking mechanism creates consistent friction along the thread engagement, effectively dampening vibrational energy that causes conventional nuts to back off. With Class 2B thread fit and UNF fine threads, this external hex locknut ensures precise alignment and uniform load distribution across fastened components, reducing stress concentrations that lead to premature failure in high-cycle applications.

Specification Summary & Compliance

This locknut features precision Class 2B thread fit with 5/8"-18 UNF fine threads and right-hand thread direction. Manufacturing conforms to UNF (Unified National Fine) thread standards with dimensional specifications including 15/16" width across flats and 13/32" height. The cadmium-plated steel construction meets industry standards for corrosion protection and is compliant with RoHS and REACH environmental regulations for industrial components.