S-92186A689 5/16"-18 x 1 3/4" ASME B18.2.1 Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction for long-lasting performance in harsh industrial environments
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing capability
• Precision thread engagement with Class 2A UNC coarse threads ensuring secure fastening and vibration resistance
• Optimized partial threading providing superior clamping force distribution while reducing material usage
• Industry-standard compliance meeting ASME B18.2.1 specifications for consistent quality and interchangeability
• Environmental regulation adherence with RoHS 3 and REACH compliance for global market acceptance
• Enhanced installation efficiency with external hex drive design allowing for high-torque application with standard tools

Professional Applications & Engineering Value

These 316 stainless steel hex head screws deliver exceptional engineering value in demanding industrial applications where corrosion resistance and mechanical reliability are paramount. The UNC coarse thread configuration provides superior performance in soft materials and high-vibration environments, while the partial threading design optimizes stress distribution across fastened joints. The external hex drive enables high-torque installation without stripping, making these ASME B18.2.1 compliant fasteners ideal for chemical processing equipment, marine hardware, food processing machinery, and outdoor infrastructure where exposure to corrosive elements would compromise ordinary fasteners. The combination of 70,000 psi tensile strength and Rockwell B70 hardness ensures these screws maintain structural integrity under sustained mechanical loads.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit tolerance ensuring consistent engagement and reliability. These 5/16"-18 UNC hex head screws feature a 1 3/4" length with 7/8" minimum thread length and comply with ASME B18.2.1 manufacturing specifications. The products are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, containing no substances of very high concern above threshold limits as of the latest compliance verification.