S-90696A198 5/16"-18 x 4 3/4" 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 extended service life
• High-strength fastening with 70,000 psi tensile strength and Rockwell B70 hardness for reliable performance under heavy loads
• Precise, secure thread engagement thanks to Class 3A thread fit and UNC coarse threads, reducing the risk of cross-threading
• Easy installation and high torque capability with a standard hex socket head and 1/4" drive, minimizing tool slippage
• Versatile partial threading on a 4 3/4" length allows for both clamping and alignment in complex assemblies
• Guaranteed dimensional consistency and interchangeability, manufactured to meet ASME B18.3 specifications
• Safe for regulated industries with full compliance to RoHS 3 and REACH environmental standards

Professional Applications & Engineering Value

This 18-8 Stainless Steel Socket Head Cap Screw is engineered to solve critical fastening challenges in demanding industrial settings. The 5/16"-18 UNC coarse thread design ensures quick assembly and robust holding power, even in high-vibration environments like heavy machinery and automotive systems. The partially threaded shank provides a non-threaded bearing surface, preventing loosening and distributing clamp load effectively. With a 70,000 psi tensile strength and corrosion-resistant material, it delivers long-term reliability in applications ranging from precision equipment to structural frameworks, reducing maintenance needs and downtime.

Specification Summary & Compliance

This screw features a 5/16"-18 UNC thread with Class 3A fit for precise thread engagement, a length of 4 3/4", and a 1/4" hex drive. It is manufactured in accordance with ASME B18.3 and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material quality.