S-91343A100 1/4"-20 Flange Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through serrated locking technology that prevents loosening under dynamic loads
• Enhanced load distribution with 19/32" flange diameter that reduces surface pressure and prevents material damage
• Exceptional corrosion resistance thanks to 316 Stainless Steel construction for harsh environments
• Reliable thread engagement with Class 2B thread fit ensuring consistent performance in industrial applications
• Quick installation using standard external hex drive compatible with common tools
• Coarse UNC threading providing faster assembly and reduced cross-threading risks
• Regulatory compliance meeting RoHS 3 and REACH standards for global industrial use

Professional Applications & Engineering Value

This 316 Stainless Steel serrated flange locknut addresses critical industrial challenges where vibration-induced loosening and corrosion compromise fastener integrity. The UNC coarse thread design enables rapid installation in high-volume assembly operations, while the serrated locking mechanism creates permanent friction against mating surfaces, eliminating the need for additional locking components. The integrated 19/32" flange distributes clamping force across wider areas, preventing surface damage in soft materials and reducing point loading. Particularly valuable in industrial machinery, transportation equipment, and marine applications, this external hex drive locknut maintains secure fastening in corrosive environments where ordinary fasteners would fail, delivering long-term reliability with minimal maintenance requirements.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2B thread fit for consistent engagement and UNC coarse thread (1/4"-20) specifications. The nut features a 19/32" flange diameter with 0.04" thickness and 7/16" width across flats with 15/64" height. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and chemical restriction adherence for industrial and commercial applications worldwide.