S-92240A878 7/8"-9 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 environments and reducing maintenance costs.
• Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B70 hardness for reliable performance under high-stress loads.
• Optimized for high-torque applications featuring an external hex drive and large 1 5/16" head width for secure, easy installation with standard tools.
• Enhanced assembly efficiency with coarse UNC threads and Class 2A fit, providing quick engagement and consistent clamping force.
• Full-threaded design ensures maximum grip length and uniform stress distribution across the entire 1 3/4" length.
• Compliance with major standards including ASME B18.2.1, guaranteeing dimensional accuracy and interchangeability.
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting strict international regulatory requirements.

Professional Applications & Engineering Value

This 7/8"-9 UNC hex head screw is engineered to solve critical challenges in heavy machinery, structural fabrication, and marine equipment. The 18-8 Stainless Steel material provides excellent resistance to rust and chemical exposure, significantly extending service life in corrosive industrial settings. Its coarse thread and Class 2A fit ensure rapid assembly and reliable performance in high-vibration environments, reducing the risk of loosening. With a robust external hex drive and high tensile strength, it delivers dependable fastening for construction, transportation, and energy sector applications where failure is not an option.

Specification Summary & Compliance

This fastener adheres to Class 2A thread fit tolerances and UNC coarse thread specifications per ASME B18.2.1. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material sustainability.