S-92198A899 7/8"-9 x 8" 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 strength and durability featuring 80,000 psi tensile strength and Rockwell B70 hardness for heavy-duty applications
• Reliable coarse UNC threading (7/8"-9) with Class 2A fit ensures secure fastening and vibration resistance
• Optimized partial threading design provides concentrated grip strength where needed most
• External hex drive compatibility with 1 5/16" head width for standard tooling and easy installation
• Full regulatory compliance meeting ASME B18.2.1 specifications plus RoHS 3 and REACH environmental standards
• Right-hand thread orientation with 8" length delivers versatile fastening solutions for structural applications

Professional Applications & Engineering Value

Engineered for demanding industrial scenarios, this 7/8"-9 UNC hex head screw delivers critical performance where corrosion resistance and structural integrity are paramount. The 18-8 Stainless Steel composition provides inherent protection against rust and chemical degradation in marine, chemical processing, and outdoor applications. The partially threaded design concentrates thread engagement at critical stress points while the coarse UNC thread pattern prevents loosening under vibration and dynamic loads. With 80,000 psi tensile strength and Rockwell B70 hardness, this heavy-duty hex bolt maintains clamping force in structural steel connections, machinery assembly, and infrastructure projects where failure isn't an option. The external hex drive configuration ensures compatibility with standard industrial tools for efficient installation and maintenance.

Specification Summary & Compliance

This 8" length hex head screw features precision Class 2A thread fit tolerances with 7/8"-9 UNC coarse threading and 2 1/4" minimum thread length. Manufactured to ASME B18.2.1 specifications with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The inch system measurement ensures compatibility with North American industrial standards and equipment.