S-91839A105 2-56 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through Flex-Top locking technology that maintains secure fastening in high-motion environments
• Exceptional corrosion resistance with 18-8 stainless steel construction for long-term reliability in harsh conditions
• Easy installation and removal using standard tools thanks to the external hex drive design
• Reliable thread engagement with Class 2B thread fit ensuring consistent performance across applications
• Wide compatibility with UNC coarse threading system for versatile use across industrial equipment
• Environmental compliance meeting RoHS 3 and REACH standards for safe usage in regulated industries
• Durable mechanical performance with standard hex nut profile providing excellent torque transmission

Professional Applications & Engineering Value

This 2-56 UNC locknut delivers critical vibration resistance where traditional fasteners fail. The 18-8 stainless steel construction provides excellent corrosion resistance, making it ideal for outdoor equipment, marine applications, and chemical processing environments. The Flex-Top locking technology creates consistent friction along the thread interface, preventing loosening under continuous vibration in machinery, automotive assemblies, and electrical enclosures. With its external hex drive and coarse UNC threads, installation is streamlined while maintaining secure locking performance. This combination of materials and engineering addresses common industrial challenges of maintenance reduction and reliability enhancement in dynamic operating conditions.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2B thread fit and UNC coarse threading (2-56 size). Features standard 1/4" width and 5/32" height with right-hand thread direction. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for industrial applications worldwide.