S-92941A566 1/4"-28 x 1 1/2" ASME B18.2.1 Brass Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from brass construction, ideal for harsh environments and reducing maintenance costs
• High tensile strength of 50,000 psi ensures reliable, long-lasting fastening under significant load and stress
• Precise Class 2A thread fit provides smooth assembly and reduces the risk of cross-threading or galling
• External hex drive and hex head design allows for high-torque installation with standard tools, speeding up assembly
• Fine UNF threading (1/4"-28) offers improved vibration resistance and superior holding power in dynamic applications
• Partial threading provides an unthreaded shank for precise clamping and shear strength where needed
• Compliance with ASME B18.2.1, RoHS 3, and REACH guarantees material quality, safety, and global regulatory acceptance

Professional Applications & Engineering Value

This brass hex head screw is engineered to solve critical challenges in electrical, marine, and plumbing systems where corrosion resistance is paramount. The UNF fine thread and Class 2A fit ensure leak-proof, secure connections in high-vibration equipment, preventing loosening over time. Its 50,000 psi tensile strength and Rockwell B55 hardness provide durability against mechanical stress, while the external hex drive facilitates quick, tool-accessible installation in confined spaces. Ideal for industrial assemblies requiring non-sparking, non-magnetic properties, this fastener delivers reliability and compliance with major industry standards.

Specification Summary & Compliance

This screw features a 1/4"-28 UNF fine thread with Class 2A thread fit for precise dimensional accuracy and a length of 1 1/2". It is manufactured to meet ASME B18.2.1 specifications, ensuring consistent quality and performance. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to strict environmental and safety regulations for hazardous substances.