S-90083A225 1/2"-20 Hex Nuts

Key Features & Benefits at a Glance

• Left-hand thread design provides secure fastening in applications requiring reverse rotation resistance
• Thin profile construction (5/16" height) enables installation in space-constrained assemblies without compromising strength
• Grade 2 steel material delivers reliable mechanical strength and durability for industrial environments
• Class 2B thread fit ensures consistent engagement and smooth assembly with mating components
• External hex drive style offers superior torque transmission and tool accessibility
• Fine UNF thread spacing (20 TPI) provides enhanced vibration resistance and load distribution
• Comprehensive compliance with RoHS 3 and REACH regulations ensures environmental and workplace safety

Professional Applications & Engineering Value

This left-hand thread hex nut addresses critical engineering challenges in rotating equipment and machinery where reverse-thread applications prevent loosening under counter-clockwise motion. The thin hex nut profile provides significant space savings while maintaining full Grade 2 steel strength, making it ideal for compact assemblies in automotive, manufacturing, and heavy equipment. The UNF fine thread configuration (1/2"-20) delivers superior vibration resistance compared to coarse threads, ensuring long-term fastening integrity in high-stress environments. The external hex drive allows for efficient installation and removal with standard tools, reducing maintenance time and labor costs in industrial settings.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2B thread fit tolerance for consistent mating performance. Complies with UNF thread standards (1/2"-20 fine thread) and inch system measurements. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements. Dimensions: 3/4" width × 5/16" height. Suitable for applications requiring Grade 2 strength classification in industrial fastening systems.