S-90152A338 5/16"-18 x 1 1/4" ASME B18.3, ASTM F837 Stainless Steel Wire-Lockable Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and reducing long-term maintenance costs.
• Superior load-bearing capability thanks to an 80,000 psi tensile strength and Rockwell B70 hardness, ensuring reliable performance under high stress.
• Precise and secure fastening achieved with Class 3A thread fit and UNC coarse threads, minimizing the risk of cross-threading and loosening.
• High-torque installation enabled by the 1/4" hex drive and standard socket head profile, allowing for easy and efficient assembly with standard tools.
• Full-length threading provides consistent grip and holding power along the entire 1-1/4" length, suitable for a wide range of material thicknesses.
• Compliance with industry standards including ASME B18.3, ensuring dimensional accuracy, interchangeability, and reliability in professional applications.
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting global regulatory requirements for industrial components.

Professional Applications & Engineering Value

This Socket Head Cap Screw is engineered to address critical challenges in demanding industrial settings. The 18-8 Stainless Steel material offers excellent resistance to oxidation and corrosion, making it ideal for applications in chemical processing, marine environments, and food machinery where moisture and corrosive agents are present. The 5/16"-18 UNC coarse thread and Class 3A thread fit ensure rapid assembly and a secure, vibration-resistant connection, reducing downtime in high-volume production lines. With its hex drive design, it allows for high torque application in confined spaces, commonly used in machinery assembly, automotive components, and precision equipment. The combination of high tensile strength and full threading provides reliable clamping force, preventing joint failure in structural applications.

Specification Summary & Compliance

This screw features a 5/16"-18 UNC coarse thread with a Class 3A fit for precise dimensional tolerance, ensuring consistent performance. It is fully manufactured in compliance with ASME B18.3 specifications, guaranteeing adherence to recognized engineering standards. Additionally, the product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulatory requirements, confirming its suitability for use in environments with strict environmental and safety guidelines.