S-90738A130 5/16"-24 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional strength and reliability with Grade 5 classification, ensuring secure fastening in high-stress environments
• Superior corrosion resistance from zinc-plated steel construction, extending service life in harsh industrial conditions
• Precise left-hand threading for specialized applications requiring reverse rotation security and anti-loosening properties
• Fine thread engagement with 5/16"-24 UNF spacing and Class 2B fit, providing vibration resistance and improved load distribution
• Standard external hex drive design for easy installation using common tools, reducing assembly time and labor costs
• Full regulatory compliance with RoHS 3 and REACH standards, ensuring safe use in regulated industrial sectors
• Dimensional consistency with 1/2" width and 17/64" height for reliable interchangeability in assembly operations

Professional Applications & Engineering Value

This Grade 5 left hand thread hex nut delivers critical engineering solutions where conventional right-hand threads would loosen under rotational forces. The zinc-plated steel construction provides essential corrosion protection for outdoor equipment, machinery, and automotive applications exposed to moisture and chemicals. The 5/16"-24 UNF fine threads with Class 2B fit ensure superior vibration resistance, making these nuts ideal for precision assemblies in manufacturing equipment, rotating shafts, and safety-critical fastening systems. The left-hand thread direction specifically addresses applications where standard threading would naturally loosen, providing enhanced security for components subject to counter-clockwise rotation forces.

Specification Summary & Compliance

Manufactured to precise inch system standards with Class 2B thread fit for consistent engagement and reliable performance. The nut features UNF fine threads (5/16"-24) in left-hand direction with standard external hex drive configuration. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial applications worldwide. The Grade 5 strength rating confirms mechanical properties suitable for demanding fastener requirements.