S-92480A556 1/4"-20 x 2" 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 demanding industrial environments
• Excellent tensile strength of 50,000 psi ensures reliable, long-lasting fastening in high-stress applications
• Class 2A thread fit with UNC coarse threading provides easy, quick assembly and reduced cross-threading risk
• Standard 82° countersink angle and flat head design allows for a flush, secure fit in tapered seating surfaces
• Phillips No. 3 drive style offers efficient torque transfer and widespread tool compatibility
• Full threading along the 2" length delivers maximum grip and adjustment flexibility
• Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees quality, safety, and environmental standards are met

Professional Applications & Engineering Value

This 1/4"-20 UNC brass flat head screw is engineered to address common industrial challenges like corrosion, vibration loosening, and assembly efficiency. The brass construction provides inherent resistance to rust and galvanic corrosion, making it perfect for electrical enclosures, marine hardware, and plumbing systems. The coarse UNC threading and Class 2A fit ensure rapid installation with minimal risk of stripping, while the flat head with 82° countersink creates a smooth, flush finish that prevents snagging and enhances safety. With a Rockwell B50 hardness and 50,000 psi tensile strength, it maintains integrity under mechanical stress, offering reliable performance in machinery, automotive, and construction applications where durability and compliance are critical.

Specification Summary & Compliance

This screw features precise Class 2A thread fit per UNC standards, ensuring consistent engagement and tolerance. It is manufactured in compliance with ASME B18.6.3 specifications for dimensional accuracy and performance. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to strict environmental and safety regulations for hazardous substances. Additional details include a right-hand thread direction, fully threaded design, and measurements such as 2" length and 0.477" head diameter, all conforming to industrial standards for reliability.