S-92941A589 5/16"-18 x 1 3/4" ASME B18.2.1 Brass Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with brass construction, ideal for harsh environments and electrical applications where rust prevention is critical
• High tensile strength of 50,000 psi ensures reliable load-bearing capacity and joint integrity in demanding assemblies
• Rockwell B55 hardness provides excellent durability and resistance to wear during installation and service life
• External hex drive design allows for high-torque installation with standard tools, reducing assembly time and improving efficiency
• Class 2A thread fit with UNC coarse threading delivers faster installation and reduced cross-threading risk compared to fine threads
• Partial threading offers unthreaded shank for precise clamping and shear strength in structured applications
• Full compliance with ASME B18.2.1, RoHS 3, and REACH guarantees quality, safety, and environmental responsibility for industrial procurement

Professional Applications & Engineering Value

This 5/16"-18 UNC brass hex head screw is engineered to solve critical challenges in electrical enclosures, marine equipment, and plumbing systems where corrosion resistance and non-magnetic properties are essential. The brass material prevents galvanic corrosion when mating with dissimilar metals, while the coarse UNC threading ensures rapid assembly in soft materials or blind holes. With partial threading, it provides superior clamp load distribution, making it ideal for precision machinery and structural frameworks that require vibration resistance. The external hex drive accommodates high torque applications, reducing fastener failure in heavy-duty industrial assemblies and maintenance operations.

Specification Summary & Compliance

This fastener maintains Class 2A thread fit per UNC standards, ensuring consistent engagement and dimensional accuracy. Manufacturing strictly follows ASME B18.2.1 specifications for hex head screws, with a tensile strength of 50,000 psi and Rockwell B55 hardness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for industrial use.