S-92186A904 7/8"-9 x 8 1/2" ASME B18.2.1 Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments thanks to 316 stainless steel construction, ideal for marine, chemical, and outdoor applications.
• High tensile strength of 70,000 psi ensures reliable performance under heavy loads and in demanding structural fastening.
• Robust Rockwell B70 hardness provides excellent durability and resistance to wear, extending service life.
• Coarse UNC threading (7/8"-9) offers faster installation and reduced risk of cross-threading in coarse materials.
• Class 2A thread fit guarantees consistent, precise engagement for secure fastening and ease of assembly.
• Partially threaded design allows for effective clamping where unthreaded shank strength is critical.
• Compliance with ASME B18.2.1, RoHS 3, and REACH ensures product reliability, safety, and environmental responsibility.

Professional Applications & Engineering Value

This 7/8"-9 UNC hex head screw in 316 stainless steel is engineered to solve critical challenges in industrial settings, such as corrosion from chemicals, saltwater, or high humidity. Its coarse thread and external hex drive enable quick, secure fastening in heavy machinery, construction frameworks, and marine equipment, reducing installation time and minimizing thread stripping. The partially threaded configuration provides enhanced shear strength where full threading isn't needed, making it ideal for structural bolting and high-stress assemblies. With a tensile strength of 70,000 psi and Rockwell B70 hardness, it delivers long-term reliability in demanding applications, from offshore platforms to industrial processing plants, ensuring reduced maintenance and downtime.

Specification Summary & Compliance

This hex head screw adheres to precise dimensional standards, including Class 2A thread fit for consistent tolerance and UNC coarse threading (7/8"-9). It is manufactured in compliance with ASME B18.2.1 specifications and meets regulatory requirements such as RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring environmental safety and material integrity for global industrial use.