S-90570A720 3/8"-16 Hex Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance with left-hand threading that prevents loosening in counter-rotational applications
• Enhanced torque capability through the extra wide profile that distributes load more effectively
• Reliable mechanical performance with Grade 5 steel construction providing 120,000 PSI minimum tensile strength
• Secure thread engagement with Class 2B thread fit ensuring consistent mating with Class 2A external threads
• Quick installation in coarse thread applications using UNC 3/8"-16 threading for faster assembly
• Durable industrial service with external hex drive allowing high-torque application with standard tools
• Environmental compliance assurance meeting RoHS 3 and REACH standards for global industrial use

Professional Applications & Engineering Value

This left-hand thread hex nut provides critical engineering solutions for applications where conventional right-hand threading would naturally loosen due to rotational forces. The Grade 5 steel construction delivers exceptional strength for heavy machinery, conveyor systems, and rotating equipment where reverse-thread fastening is essential. The extra wide profile significantly increases bearing surface area, reducing stress concentration and preventing material deformation in high-vibration environments. With UNC coarse threading, this nut offers rapid installation in industrial maintenance scenarios while maintaining secure fastening. The combination of left-hand orientation and robust steel material makes this component indispensable for counter-rotational mechanisms, safety-critical assemblies, and specialized equipment requiring reliable reverse-thread fastening solutions that withstand demanding operational conditions.

Specification Summary & Compliance

This hex nut features precise 3/8"-16 UNC coarse threading with Class 2B thread fit for consistent mating with Class 2A external threads. Manufactured to inch system standards with dimensions of 11/16" width and 23/64" height. The component complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial applications. Constructed from Grade 5 steel meeting applicable mechanical property requirements for reliable performance in demanding fastening scenarios.