S-94238A102 5/16"-18 Flange Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through nylon insert locking that maintains secure fastening in high-motion environments
• Excellent corrosion resistance with 18-8 stainless steel construction for long-term durability in harsh conditions
• Enhanced load distribution from the 0.68" flange diameter that prevents surface damage and reduces pull-through
• Reliable high-temperature performance with nylon insert rated up to 250°F for consistent locking in thermal applications
• Quick installation and removal with external hex drive design for standard tool compatibility and efficient maintenance
• Precise thread engagement with UNC coarse threads and Class 2B fit ensuring smooth assembly and secure connections
• Environmental compliance assurance meeting REACH and RoHS 3 standards for safe industrial use

Professional Applications & Engineering Value

This nylon insert locknut flange nut combines multiple engineering solutions for demanding industrial applications where vibration loosening poses significant reliability challenges. The 18-8 stainless steel construction provides inherent corrosion resistance for outdoor equipment, marine components, and chemical processing facilities, while the UNC coarse threads enable rapid assembly in production environments. The integrated flange eliminates the need for separate washers, reducing part count and installation time in automotive assemblies, machinery frames, and structural supports. The nylon insert locking mechanism maintains clamping force under continuous vibration, making it ideal for motors, pumps, and transportation equipment where thermal cycling up to 250°F occurs. This combination of vibration resistance, corrosion protection, and thermal stability delivers long-term reliability in critical fastening applications.

Specification Summary & Compliance

This flange locknut features 5/16"-18 UNC coarse threads with Class 2B thread fit for consistent engagement and reliable performance. The external hex drive (1/2" width) provides standard tool compatibility, while the 0.68" flange diameter with 0.05" thickness offers superior load distribution. Manufactured from 18-8 stainless steel, this fastener is fully compliant with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental standards, ensuring safe use across various industrial sectors.