S-92198A308 5/16"-24 x 1 3/4" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing performance
• Precise thread engagement with Class 2A thread fit and UNF fine threading for secure fastening in critical applications
• Optimized torque transmission through external hex drive and standard 1/2" head width for efficient installation
• Enhanced design flexibility with partially threaded shank for controlled clamping and vibration resistance
• Long-term reliability backed by ASME B18.2.1 standard compliance and full RoHS 3/REACH environmental regulations
• Broad compatibility with inch system measurements and right-hand threading for seamless integration into existing assemblies

Professional Applications & Engineering Value

These 18-8 stainless steel hex head screws deliver critical performance advantages in demanding industrial settings where corrosion resistance and mechanical integrity are paramount. The 5/16"-24 UNF fine threading provides superior resistance to vibrational loosening compared to coarse threads, while the partially threaded design concentrates clamping force precisely where needed. The external hex drive configuration ensures maximum torque application without stripping, making these fasteners ideal for machinery assembly, structural frameworks, and equipment maintenance. With 80,000 psi tensile strength and Rockwell B70 hardness, they maintain structural integrity under sustained loads and dynamic stresses, solving common failure points in heavy-duty applications while meeting rigorous industry standards.

Specification Summary & Compliance

Manufactured to exacting ASME B18.2.1 specifications with Class 2A thread fit tolerance for consistent engagement. Features include 5/16"-24 UNF fine threads, 1 3/4" length, and partial threading configuration. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across regulated industries. All dimensions conform to inch system measurements with right-hand thread direction for standardized installation.