S-92480A858 1/2"-13 x 1 1/4" ASME B18.6.3 Brass Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from high-quality brass material, ideal for humid or chemically exposed environments.
• Excellent tensile strength of 50,000 psi ensures reliable load-bearing capacity and joint integrity under stress.
• Class 2A thread fit with UNC coarse threading provides smooth, secure engagement and faster assembly in various materials.
• Standard 82° countersink angle and flat head design allows for a flush, professional finish, reducing snagging risks.
• Fully threaded shank maximizes grip length and holding power across the entire fastener.
• Phillips No. 4 drive offers efficient torque transfer and reduces cam-out during installation.
• Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees adherence to industry standards and environmental safety.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these 1/2"-13 UNC brass flat head screws address common challenges like galvanic corrosion and mechanical failure. The brass construction naturally resists rust and degradation, making them ideal for marine, electrical, and plumbing applications where moisture is a concern. With a Rockwell B50 hardness and coarse thread spacing, they provide durable fastening in soft metals or wood, preventing stripping and ensuring long-term stability. The flat head profile with an 82° countersink creates a seamless surface, essential for safety and aesthetics in assembled products. Fully compliant with ASME B18.6.3, these screws deliver consistent performance in OEM manufacturing, maintenance, and repair operations.

Specification Summary & Compliance

This screw features precise Class 2A thread fit per UNC standards, ensuring dimensional accuracy and interchangeability. It meets ASME B18.6.3 specifications for mechanical and dimensional requirements, and is RoHS 3 (2015/863/EU) compliant under exemption 6(a)-I for lead in brass alloys, alongside full REACH (EC 1907/2006) adherence as of June 2023. The combination of 50,000 psi tensile strength and standardized coarse threading supports reliable use in general-purpose and heavy-duty fastening.