S-90696A247 5/8"-11 x 6 1/2" ASME B18.3 18-8 Stainless Steel Socket 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 70,000 psi tensile strength and Rockwell B70 hardness for reliable performance under high stress.
• Precise thread engagement with Class 3A fit ensures secure fastening and minimizes the risk of loosening in critical assemblies.
• Optimized for heavy-duty applications featuring a coarse UNC thread and 1/2" hex drive for easy installation and high torque transmission.
• Versatile partially threaded design allows for both clamping and alignment functions in complex machinery and structural components.
• Compliance with industry standards including ASME B18.3, ensuring dimensional accuracy and interchangeability in professional settings.
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance, supporting sustainable procurement and regulatory adherence.

Professional Applications & Engineering Value

This 5/8"-11 UNC Socket Head Cap Screw is engineered to address common industrial challenges such as vibration-induced loosening and material degradation. The 18-8 Stainless Steel provides excellent resistance to rust and chemical exposure, making it suitable for marine, chemical processing, and outdoor equipment applications. Its Class 3A thread fit and coarse thread spacing ensure rapid assembly and reliable holding power in high-vibration environments. The partially threaded rod type offers flexibility for applications requiring precise unthreaded shank sections, such as in machinery frames, automotive assemblies, and construction fixtures. With a 1/2" hex drive and standard socket head profile, it enables efficient installation in confined spaces, reducing labor time and enhancing operational efficiency.

Specification Summary & Compliance

This fastener adheres to ASME B18.3 specifications, ensuring precise dimensional control and Class 3A thread fit for superior thread engagement. The UNC coarse thread with a diameter of 0.625" and minimum thread length of 1-3/4" provides consistent performance. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming the absence of hazardous substances and supporting environmental safety standards in industrial supply chains.