S-92040A110 5/16"-18 Cap Nuts

Key Features & Benefits at a Glance

• Superior load distribution through extra-wide high profile design, preventing surface damage and ensuring secure fastening
• Exceptional corrosion resistance with 18-8 stainless steel construction, maintaining integrity in harsh industrial environments
• Reliable thread engagement with Class 2B thread fit, providing consistent performance and reducing cross-threading risks
• Easy installation and removal using standard tools thanks to external hex drive design
• Heavy-duty performance with coarse UNC threads, offering excellent vibration resistance and holding power
• Environmental compliance assurance meeting RoHS 3 and REACH standards for safe industrial use
• Optimized dimensions (5/8" width × 5/8" height) for balanced strength-to-weight ratio in space-constrained applications

Professional Applications & Engineering Value

This heavy-duty 5/16"-18 UNC extra-wide high cap nut delivers critical engineering solutions where vibration resistance and corrosion protection are paramount. The 18-8 stainless steel construction provides excellent durability in demanding environments including marine applications, chemical processing equipment, and outdoor machinery. The extra-wide high profile significantly increases bearing surface area, distributing clamping forces more effectively to prevent material deformation and maintain joint integrity under dynamic loads. With coarse UNC threads and Class 2B thread fit, this cap nut offers superior resistance to loosening from vibration while ensuring smooth installation. The external hex drive design accommodates standard wrenches for efficient assembly in tight spaces, making it ideal for maintenance applications where accessibility is limited.

Specification Summary & Compliance

This cap nut features precise 5/16"-18 UNC coarse threads with Class 2B thread fit per ASME B1.1 standards, ensuring reliable engagement with mating components. The 18-8 stainless steel construction provides consistent mechanical properties and corrosion resistance. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations guarantees environmental safety. Dimensions include 5/8" width across flats and 5/8" height with 3/8" thread depth, manufactured to industrial fastener specifications for consistent quality and performance.