S-90047A133 7/16"-20 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through center lock distorted thread technology that maintains secure fastening under dynamic loads
• Excellent corrosion protection with 18-8 stainless steel construction for extended service life in harsh environments
• Precise thread engagement with Class 2B thread fit ensuring reliable performance and consistent clamping force
• Easy installation and removal using standard wrench tools thanks to the external hex drive design
• Optimized for fine thread applications with 7/16"-20 UNF threading providing enhanced load distribution
• Industry-standard compatibility with standard hex profile allowing seamless integration into existing assemblies
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for environmental and safety requirements

Professional Applications & Engineering Value

This 7/16"-20 UNF locknut delivers exceptional engineering value through its innovative center lock distorted thread design, which creates controlled friction along the thread engagement path to prevent loosening from vibration and thermal cycling. Manufactured from 18-8 stainless steel, it provides reliable corrosion resistance in demanding industrial environments including manufacturing equipment, transportation systems, and outdoor machinery. The external hex drive combined with Class 2B thread fit ensures consistent installation torque and reliable performance in high-vibration applications where standard nuts would fail. The fine thread spacing offers superior resistance to vibrational loosening while maintaining the strength requirements of heavy-duty assemblies, making it ideal for precision equipment, automotive components, and industrial machinery where safety-critical connections demand maximum security.

Specification Summary & Compliance

This heavy-duty locknut features 7/16"-20 UNF fine threads with Class 2B thread fit for precise dimensional accuracy and reliable performance. The right-hand thread direction and standard hex profile (11/16" width, 3/8" height) ensure compatibility with industry-standard tools and applications. Manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, this fastener meets the highest standards for environmental safety and industrial use, providing assurance for procurement professionals in regulated industries.