S-92941A544 1/4"-20 x 1 1/4" ASME B18.2.1 Brass Hex Head Screws
Brass Hex Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance thanks to brass construction, ideal for harsh environments and moisture-prone applications
- High tensile strength of 50,000 psi ensures reliable load-bearing capacity and joint integrity under stress
- Excellent durability with Rockwell B55 hardness, providing resistance to wear and deformation
- Secure and precise fastening with Class 2A thread fit and UNC coarse thread for easier alignment and reduced cross-threading
- Versatile partial threading allows for unthreaded shank sections, offering enhanced shear strength where needed
- Easy installation and removal with a standard external hex drive and 7/16" head width for common tool compatibility
- Guaranteed compliance and safety meeting ASME B18.2.1 standards and being RoHS 3 & REACH compliant for global use
Professional Applications & Engineering Value
This 1/4"-20 UNC brass hex head screw is engineered to address common industrial challenges, such as corrosion in electrical components, plumbing systems, and marine equipment. The brass material inherently resists rust and galvanic corrosion, extending service life in demanding conditions. Its UNC coarse thread and Class 2A thread fit ensure quick, reliable assembly with reduced risk of stripping, while the partial threading design enhances grip in materials where full threads aren't necessary. With a tensile strength of 50,000 psi and Rockwell B55 hardness, it provides dependable performance in applications requiring repeated disassembly, such as machinery maintenance, HVAC systems, and automotive assemblies, ensuring long-term operational efficiency.
Specification Summary & Compliance
This screw features precise Class 2A thread fit per UNC standards, with a thread size of 1/4"-20 and a minimum thread length of 3/4". It is manufactured in compliance with ASME B18.2.1 specifications and adheres to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability for industrial use.
