S-92196A142 5/16"-18 x 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 industrial environments.
• Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B70 hardness for reliable, long-term performance.
• Precise, secure fastening ensured by the Class 3A thread fit, minimizing the risk of loosening under vibration.
• Easy installation and high torque capability with the standard 1/4" hex drive and socket head design.
• Versatile partial threading allows for a combination of clamped grip and unthreaded shank strength.
• Broad industry compliance meeting ASME B18.3 specifications, ensuring dimensional accuracy and interchangeability.
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance for use in regulated markets.

Professional Applications & Engineering Value

This 5/16"-18 UNC Socket Head Cap Screw is engineered to solve critical fastening challenges in demanding applications. The 18-8 Stainless Steel material provides excellent resistance to rust and corrosion, making it suitable for machinery, automotive assemblies, and outdoor equipment exposed to moisture. The coarse UNC thread and Class 3A thread fit ensure quick assembly and a tight, reliable connection that withstands vibrational stresses. With a partially threaded design and 4-inch length, it offers optimal clamping force where a smooth shank is needed, preventing damage to materials. The 1/4" hex drive allows for high-torque installation in confined spaces, enhancing efficiency in production and maintenance workflows. This screw delivers consistent performance in industrial socket screw applications, from heavy-duty machinery to precision equipment.

Specification Summary & Compliance

This socket head cap screw features a 5/16"-18 UNC coarse thread with a Class 3A thread fit for high precision and strength. It is manufactured in accordance with ASME B18.3 standards, ensuring dimensional accuracy and reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious and global industrial supply chains.