S-92186A604 5/16"-18 x 5 1/2" ASME B18.2.1 Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 316 Stainless Steel construction for reliable performance in harsh environments
• Superior load-bearing capability with 70,000 psi tensile strength for demanding industrial applications
• Optimized thread engagement through Class 2A thread fit ensuring secure fastening and vibration resistance
• Enhanced durability with Rockwell B70 hardness providing excellent wear resistance
• Quick installation and removal with external hex drive design for efficient maintenance operations
• Versatile partial threading allowing for both clamping and alignment functions in assembly applications
• Regulatory compliance assurance meeting ASME B18.2.1 specifications and environmental standards

Professional Applications & Engineering Value

These 5/16"-18 UNC hex head screws deliver exceptional engineering value in demanding industrial environments where corrosion resistance and structural integrity are paramount. The 316 Stainless Steel composition provides superior protection against chemical exposure and atmospheric corrosion, making these external hex drive fasteners ideal for marine, chemical processing, and food industry applications. The coarse UNC thread pattern ensures rapid installation and reliable performance in materials where fine threads might strip or fail. With partial threading design, these screws offer precise clamping force control while maintaining alignment stability in structural assemblies. The combination of 70,000 psi tensile strength and Rockwell B70 hardness ensures these industrial-grade fasteners withstand heavy vibration and dynamic loading conditions without compromising joint integrity.

Specification Summary & Compliance

Manufactured to precise Class 2A thread fit tolerances with 5/16"-18 UNC coarse thread specifications, these hex head screws ensure consistent performance across industrial applications. Compliance with ASME B18.2.1 manufacturing standards guarantees dimensional accuracy and mechanical properties. Environmental responsibility is maintained through full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring safe use across global markets. The 5 1/2" length with 7/8" minimum thread length provides optimal engagement for various material thicknesses while maintaining structural reliability.