S-92480A846 5/16"-18 x 5/8" ASME B18.6.3 Brass Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from brass construction, ideal for harsh industrial environments and outdoor applications
• Excellent mechanical strength with 50,000 psi tensile strength and Rockwell B50 hardness for reliable performance in demanding conditions
• Precise thread engagement with Class 2A thread fit and UNC coarse threads ensuring secure fastening and vibration resistance
• Optimized flush mounting featuring standard 82° countersink angle for seamless surface integration and professional finish
• Enhanced driving efficiency with No. 4 Phillips drive providing positive torque transfer and reduced cam-out risk
• Full-threaded design maximizing grip length and load distribution across the entire fastener
• Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards including RoHS 3 and REACH

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these 5/16"-18 UNC brass flat head screws deliver exceptional performance where corrosion resistance and mechanical reliability are critical. The brass material provides inherent protection against galvanic corrosion and chemical degradation, making these Phillips drive screws ideal for marine equipment, electrical enclosures, and plumbing systems. The fully threaded design ensures maximum holding power in soft materials and thin sheet metal, while the standard 82° countersink angle allows for flush installation in precision-machined components. With coarse thread spacing and Class 2A thread fit, these fasteners offer quick assembly and reliable performance in vibration-prone environments, reducing maintenance frequency and improving system longevity.

Specification Summary & Compliance

This 5/16"-18 UNC flat head screw maintains precise dimensional accuracy with Class 2A thread fit and coarse thread spacing per unified thread standards. Manufacturing complies with ASME B18.6.3 specifications for dimensional consistency and mechanical performance. Environmental compliance includes RoHS 3 (2015/863/EU) with exemption 6(a)-I for lead as an alloying element and full REACH (EC 1907/2006) compliance, ensuring safe use in regulated industrial applications worldwide.