S-90059A030 5/16"-18 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional heat resistance maintains structural integrity in applications up to 500°F, preventing deformation in high-temperature environments
• Superior corrosion resistance with PTFE plastic construction eliminates rust and chemical degradation in harsh industrial settings
• Reliable thread engagement with Class 2B thread fit ensures consistent fastening performance and vibration resistance
• Industry-standard compatibility with 5/16"-18 UNC coarse threads provides easy installation and interchangeability with existing components
• Optimized wrenching surface with standard external hex drive design allows for secure tool engagement and efficient installation
• Environmental compliance assurance with RoHS 3 and REACH compliance meets stringent regulatory requirements for industrial applications
• Dimensional precision with consistent 1/2" width and 17/64" height ensures proper fit and uniform clamping force distribution

Professional Applications & Engineering Value

This PTFE plastic hex nut delivers critical performance advantages in demanding industrial environments where temperature extremes and chemical exposure compromise conventional fasteners. The 5/16"-18 UNC thread configuration with Class 2B thread fit provides reliable fastening in applications requiring repeated assembly and disassembly, while the right-hand coarse thread spacing ensures quick installation and reduced cross-threading risks. Engineered for high-temperature applications up to 500°F, this nut maintains dimensional stability in thermal cycling conditions where metal fasteners would expand or corrode. The PTFE material's inherent corrosion resistance makes it ideal for chemical processing, food equipment, and marine applications where moisture and aggressive substances are present. The standard hex nut profile with external hex drive ensures compatibility with common tools, streamlining maintenance procedures in industrial assembly lines and equipment manufacturing.

Specification Summary & Compliance

This inch system fastener features precise 5/16"-18 UNC coarse threads with Class 2B thread fit tolerances, ensuring consistent engagement and reliable performance. The nut maintains dimensional accuracy with 1/2" width across flats and 17/64" height for standardized installation. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental safety standards for industrial components. The right-hand thread direction and standard hex nut profile follow established industrial fastener specifications for predictable performance across applications.