S-92941A539 1/4"-20 x 5/8" 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 from high-quality brass construction, ideal for harsh environments and extended service life
- High tensile strength of 50,000 psi ensures reliable performance in demanding mechanical applications
- Rockwell B55 hardness provides excellent durability and resistance to wear and deformation
- Coarse UNC thread with Class 2A fit offers faster assembly and reliable engagement in various materials
- External hex drive design allows for high-torque installation with standard tools and easy maintenance
- Full threading along the 5/8" length maximizes grip strength and load distribution across the entire fastener
- Compliance with ASME B18.2.1, RoHS 3, and REACH guarantees quality, safety, and environmental standards for industrial use
Professional Applications & Engineering Value
Engineered for demanding industrial environments, these 1/4"-20 UNC brass hex head screws address critical challenges in machinery, electrical enclosures, and marine applications where corrosion resistance is paramount. The combination of brass material and coarse thread design prevents seizing in dissimilar metals and provides reliable fastening in vibration-prone assemblies. With a Rockwell B55 hardness and 50,000 psi tensile strength, they maintain structural integrity under stress while the external hex drive ensures secure installation in confined spaces. These screws deliver consistent performance in plumbing systems, HVAC equipment, and automotive components where durability and regulatory compliance are essential.
Specification Summary & Compliance
This 1/4"-20 UNC brass hex head screw features Class 2A thread fit per ASME B18.2.1 standards, ensuring precise dimensional accuracy and interchangeability. The fully threaded 5/8" length provides consistent engagement, while manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for environmental safety and restricted substance control.
