S-92198A903 7/8"-9 x 10" 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 long-term reliability.
• Exceptional load-bearing capacity thanks to 80,000 psi tensile strength, ensuring secure fastening under high stress.
• Optimized for high-torque applications with a large external hex head (1 5/16" width) for easy installation and removal.
• Reliable thread engagement with UNC coarse threading and Class 2A fit, reducing cross-threading risks and speeding assembly.
• Versatile partial threading allows for precise clamping force control and is suitable for a wide range of material thicknesses.
• Consistent performance and durability backed by Rockwell B70 hardness, resisting wear and deformation.
• Compliance with major industry and environmental standards including ASME B18.2.1, RoHS 3, and REACH for guaranteed quality and safety.

Professional Applications & Engineering Value

This heavy-duty hex head screw is engineered to solve critical fastening challenges in demanding industrial settings. The 18-8 stainless steel material provides excellent resistance to rust and corrosion, making it ideal for outdoor, marine, or chemical-exposed applications. Its UNC coarse thread and Class 2A thread fit ensure quick, reliable assembly with reduced risk of stripping, especially in softer materials or when used with powered tools. The external hex drive and large head design allow for high torque application, securing heavy structural components, machinery, and construction assemblies without failure. The partial threading offers flexibility in joint design, allowing the unthreaded shank to bear shear loads effectively. This combination of corrosion resistance, high tensile strength, and precise engineering makes it a trusted choice for maintenance, manufacturing, and infrastructure projects where durability and performance are non-negotiable.

Specification Summary & Compliance

This screw features a 7/8"-9 UNC coarse thread with a Class 2A thread fit, ensuring standard-compliant dimensional accuracy and interchangeability. It is manufactured in accordance with ASME B18.2.1 specifications for hex head screws and bolts. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of hazardous substances and safe for use in various markets.