S-92655A705 1"-8 x 5 1/2" ASTM A193 18-8 Stainless Steel Heavy Hex Head Screws for High-Pressure Applications

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments
• Superior mechanical strength with 75,000 psi tensile strength and Rockwell B96 hardness for heavy-duty load-bearing applications
• Reliable thread engagement with Class 2A thread fit ensuring precise assembly and vibration resistance
• Optimized load distribution through partially threaded design with 3 1/4" grip length for enhanced joint stability
• Easy installation and removal with external hex drive and 1 5/8" head width for standard wrench compatibility
• Industry-standard compliance meeting ASTM A193 specifications for guaranteed quality and performance consistency
• Versatile coarse threading with 1"-8 UNC pattern providing excellent resistance to loosening in high-vibration settings

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these heavy-duty hex head screws deliver critical performance where failure is not an option. The 18-8 Stainless Steel composition provides excellent corrosion resistance in chemical processing, marine, and outdoor environments, while the ASTM Grade B8 certification ensures material integrity under extreme conditions. The partially threaded design with substantial 3 1/4" grip length concentrates clamping force precisely where needed, preventing joint slippage in structural assemblies, heavy machinery, and pressure vessel applications. The 1"-8 UNC coarse thread configuration offers superior resistance to vibration-induced loosening, making these external hex drive fasteners ideal for maintenance-intensive equipment where repeated disassembly is required.

Specification Summary & Compliance

This 1"-8 UNC hex head screw features Class 2A thread fit tolerances for precise engagement and meets ASTM A193 specifications for high-temperature service applications. The fastener maintains dimensional accuracy with 5 1/2" overall length, 2 1/4" thread length, and right-hand thread direction. Manufacturing complies with industry standards for 18-8 Stainless Steel composition and ASTM Grade B8 mechanical properties, ensuring consistent performance across industrial applications where reliability and corrosion resistance are paramount.