S-92198A898 7/8"-9 x 7" 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 environments and reducing maintenance costs
• Exceptional mechanical strength offering 80,000 psi tensile strength and Rockwell B70 hardness for reliable performance under high stress
• Optimized load distribution through the partially threaded design, minimizing thread damage and ensuring secure fastening
• Precise and reliable fit with Class 2A thread fit and UNC coarse threads, enabling quick assembly and vibration resistance
• Easy installation and removal with external hex drive and standard 1 5/16" head width, compatible with common tools
• Long-term durability in heavy-duty applications due to the 7" length and 2 1/4" minimum thread engagement
• Compliance assurance meeting ASME B18.2.1 specifications, ensuring interchangeability and safety in industrial systems

Professional Applications & Engineering Value

This 7/8"-9 UNC hex head screw is engineered to address critical challenges in industrial fastening, such as corrosion-induced failure and joint loosening under dynamic loads. The 18-8 Stainless Steel material provides excellent resistance to rust and chemicals, making it suitable for outdoor, marine, and chemical processing equipment. Its partially threaded configuration concentrates stress on the shank, reducing thread wear and preventing shear in structural assemblies. With a coarse thread design, it offers faster installation and superior performance in soft materials or high-vibration environments like machinery, construction, and transportation systems. The external hex drive ensures high torque application without slippage, enhancing efficiency in maintenance and production lines.

Specification Summary & Compliance

This screw adheres to Class 2A thread fit tolerances and UNC coarse thread standards for consistent dimensional accuracy. It conforms to ASME B18.2.1 manufacturing specifications, ensuring reliability in mechanical systems. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and restricted substance-free composition for global industrial use.