S-92941A548 1/4"-20 x 1 3/4" ASME B18.2.1 Brass Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to brass construction, ideal for harsh industrial environments and moisture-prone applications
• High tensile strength of 50,000 psi ensures reliable, long-lasting fastening under significant mechanical stress
• Rockwell B55 hardness provides excellent durability and resistance to wear and deformation
• Partially threaded design allows for secure clamping on specific unthreaded sections, preventing loosening
• External hex drive and hex head enable easy installation and high-torque application with standard tools
• UNC coarse thread offers faster assembly and better performance in softer materials or where debris is present
• Class 2A thread fit ensures consistent, free-spinning assembly with commercial nuts for efficient production

Professional Applications & Engineering Value

These 1/4"-20 UNC brass hex head screws are engineered to solve critical challenges in industrial assembly and maintenance. The brass material inherently resists corrosion, making these fasteners ideal for electrical components, marine equipment, plumbing systems, and outdoor machinery where rust compromises integrity. The coarse UNC thread provides rapid installation and superior holding power in soft substrates or vibration-prone environments, reducing assembly time and maintenance frequency. With a 50,000 psi tensile strength and Rockwell B55 hardness, they maintain clamp load under dynamic stresses, ensuring joint reliability in heavy-duty applications like HVAC systems, automotive assemblies, and industrial machinery. The partial threading allows precise engagement on specific shaft lengths, preventing thread damage and providing a clean, professional finish.

Specification Summary & Compliance

This product adheres to Class 2A thread fit for consistent dimensional accuracy and easy assembly. It conforms to the ASME B18.2.1 standard for hex head screws, ensuring interchangeability and reliability. The screw is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing it is free from hazardous substances and safe for various industrial and consumer applications.