S-90340A124 5/16"-18 x 2" Socket Head Screws for Square-Drive Wrenches

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments.
• Exceptional tensile strength of 70,000 psi ensures reliable performance under high-stress conditions.
• Precision Class 3A thread fit provides tight tolerances for secure, vibration-resistant assemblies.
• Partially threaded design with 1-1/8" minimum thread length offers controlled clamping force and easy alignment.
• High Rockwell B84 hardness enhances durability and resistance to wear over repeated use.
• Coarse 5/16"-18 UNC threads enable quick installation and reduced risk of cross-threading.
• Compliance with RoHS 3 and REACH ensures environmental safety and regulatory adherence for global supply chains.

Professional Applications & Engineering Value

This 18-8 stainless steel socket head cap screw is engineered to address common industrial challenges such as vibration loosening and corrosion in demanding settings. The Class 3A precision thread fit and coarse UNC threads provide excellent grip and ease of assembly in machinery, automotive, and construction applications. Its partially threaded configuration allows for precise load distribution, minimizing stress concentration and enhancing joint integrity. With a high tensile strength of 70,000 psi and robust Rockwell B84 hardness, it delivers long-term reliability in heavy-duty industrial fasteners, reducing maintenance needs and downtime.

Specification Summary & Compliance

This screw adheres to UNC thread standards with a Class 3A fit for high precision. It features a 5/16"-18 thread size, 2" length, and 1/4" square drive for consistent performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it meets environmental and safety requirements for industrial use.