S-92198A920 1"-8 x 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 environments and reducing maintenance costs
• High tensile strength of 80,000 psi ensures reliable performance under heavy loads and prevents fastener failure
• Class 2A thread fit provides consistent assembly and easy installation while maintaining secure connections
• Partially threaded design allows for precise clamping force control and improved joint stability
• External hex drive and 1 1/2" head width enable high-torque application with standard tools, speeding up installation
• Rockwell B70 hardness offers excellent wear resistance and extends service life in demanding applications
• Compliance with RoHS 3 and REACH ensures environmental safety and meets global regulatory standards

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, this 1"-8 UNC hex head screw delivers exceptional reliability in construction, machinery, and structural assemblies. The 18-8 stainless steel material combats rust and chemical exposure, making it ideal for outdoor or corrosive settings. Its coarse UNC thread and Class 2A fit facilitate quick, secure fastening even in vibrating environments, reducing loosening risks. With an external hex drive and partially threaded shank, it provides optimal clamping where unthreaded sections bear load without thread damage. This screw meets ASME B18.2.1 standards, ensuring dimensional consistency and interchangeability for streamlined procurement and assembly processes.

Specification Summary & Compliance

This screw adheres to Class 2A thread fit per UNC standards, with a 1"-8 coarse thread and 4" length. Manufacturing follows ASME B18.2.1 specifications for dimensional accuracy. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental responsibility.