S-92941A550 1/4"-20 x 2" 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 moisture-prone applications
• Exceptional mechanical strength with 50,000 psi tensile strength and Rockwell B55 hardness for reliable, heavy-duty performance
• Optimized for secure fastening with a partially threaded design that provides enhanced grip and vibration resistance
• Precise and reliable fit ensured by Class 2A thread fit and UNC coarse thread spacing for easy assembly and reduced cross-threading risk
• Robust drive engagement with external hex drive and 7/16" head width, allowing for high torque application with standard tools
• Compliance with major standards including ASME B18.2.1, ensuring dimensional accuracy and interchangeability
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting strict regulatory requirements

Professional Applications & Engineering Value

This 1/4"-20 UNC brass hex head screw is engineered to address critical challenges in industrial and commercial settings where corrosion resistance and mechanical reliability are paramount. The brass material inherently resists rust and galvanic corrosion, making it ideal for plumbing, electrical enclosures, marine hardware, and outdoor equipment. Its partially threaded design concentrates clamping force where needed, preventing loosening under vibration and dynamic loads. With a coarse thread spacing and Class 2A thread fit, it ensures quick, secure installation in soft materials or pre-tapped holes, reducing assembly time and improving operational efficiency. The external hex drive and substantial head dimensions allow for high-torque tightening, providing a dependable fastening solution for machinery, structural assemblies, and heavy-duty fixtures that demand long-term performance without failure.

Specification Summary & Compliance

This screw features precise Class 2A thread fit per UNC standards, with a thread size of 1/4"-20 and coarse spacing for optimal engagement. It is manufactured in accordance with ASME B18.2.1 specifications, ensuring dimensional consistency and mechanical performance. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) confirms adherence to environmental and safety regulations, supporting sustainable procurement practices.