S-92941A595 5/16"-18 x 3" ASME B18.2.1 Brass Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to brass construction, ideal for harsh environments and electrical applications
• High mechanical strength with 50,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing performance
• Secure and stable fastening ensured by the Class 2A thread fit and coarse UNC thread spacing, reducing the risk of loosening under vibration
• Easy installation and removal with the external hex drive and hex head design, compatible with standard tools
• Optimized thread engagement through the partially threaded design, providing strong grip in specific material depths
• Broad industrial compliance meeting ASME B18.2.1 standards and environmental regulations like RoHS 3 and REACH
• Durable and long-lasting performance in right-hand thread applications, maintaining integrity across repeated use cycles

Professional Applications & Engineering Value

This 5/16"-18 UNC brass hex head screw is engineered to address common industrial challenges such as corrosion, vibration loosening, and assembly efficiency. The brass material offers excellent resistance to rust and galvanic corrosion, making it suitable for marine, plumbing, and electrical systems where moisture and chemicals are present. Its partially threaded design allows for precise clamping force in layered materials, reducing the risk of strip-out in soft substrates. With a coarse thread spacing and Class 2A thread fit, it ensures quick installation and reliable holding power in high-vibration environments like machinery and automotive assemblies. The external hex drive facilitates easy torque application, streamlining maintenance and reducing downtime in industrial fastening applications.

Specification Summary & Compliance

This screw adheres to Class 2A thread fit tolerances and UNC coarse thread standards for consistent performance. It is manufactured in accordance with ASME B18.2.1 specifications, ensuring dimensional accuracy and mechanical reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible sourcing and usage in global markets.