S-92240A301 5/16"-24 x 1/2" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and reducing long-term replacement costs.
• Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B70 hardness for reliable performance under high-stress loads.
• Secure and precise fastening ensured by the Class 2A thread fit and UNF fine thread, minimizing the risk of loosening in vibrating applications.
• Efficient installation and removal with the external hex drive and standard hex head, allowing for high torque application with common tools.
• Maximum grip and holding power from the fully threaded design, providing consistent clamping force along the entire 1/2" length.
• Guaranteed dimensional reliability and interchangeability by conforming to the rigorous ASME B18.2.1 standard.
• Safe for regulated industries with compliance to RoHS 3 and REACH environmental regulations.

Professional Applications & Engineering Value

This 5/16"-24 UNF hex head screw is engineered to solve critical challenges in demanding industrial applications. The 18-8 Stainless Steel material provides excellent resistance to rust and corrosion, making it a durable choice for machinery, outdoor equipment, and assemblies exposed to moisture or chemicals. The combination of fine threading (UNF) and a Class 2A thread fit offers superior vibration resistance compared to coarse threads, preventing spontaneous loosening in dynamic systems. The fully threaded body and external hex drive ensure deep engagement and ease of installation, delivering reliable clamping force and simplifying maintenance procedures in tight spaces. This fastener is a trusted component for engineers seeking a balance of high tensile strength, environmental compliance, and long-term operational integrity.

Specification Summary & Compliance

This screw features a 5/16"-24 UNF thread with a Class 2A fit for precise dimensional tolerance. It is manufactured in accordance with the ASME B18.2.1 standard, ensuring consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of restricted hazardous substances.