S-92480A849 5/16"-18 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 construction, ideal for harsh industrial environments
• Excellent mechanical strength with 50,000 psi tensile strength and Rockwell B50 hardness for reliable load-bearing performance
• Precise thread engagement with Class 2A thread fit ensuring secure fastening and vibration resistance
• Optimized flush mounting featuring 82° countersink angle and standard flat head profile for seamless surface integration
• Enhanced drive stability with Phillips No. 4 drive style providing secure torque transmission during installation
• Full-thread coverage along the 1-1/4" length maximizes grip strength and distribution
• Regulatory compliance assurance meeting ASME B18.6.3 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

These 5/16"-18 UNC brass flat head screws deliver exceptional engineering value across industrial applications where corrosion resistance and mechanical reliability are paramount. The brass material provides natural protection against oxidation and galvanic corrosion, making these flat head screws ideal for marine equipment, electrical enclosures, and plumbing systems. The coarse UNC thread design ensures quick assembly and superior holding power in soft materials, while the fully threaded configuration maximizes connection integrity. The 82° countersink angle creates a flush surface finish critical for applications requiring aerodynamic profiles or smooth operational surfaces. These industrial screws maintain consistent performance in temperature-variable environments, offering engineers a dependable fastening solution that combines material excellence with precision manufacturing standards.

Specification Summary & Compliance

Manufactured to exacting dimensional standards with Class 2A thread fit tolerance for optimal engagement. The UNC coarse thread (5/16"-18) follows standardized pitch specifications. Compliant with ASME B18.6.3 manufacturing specifications for dimensional accuracy and performance. Meets environmental regulations including RoHS 3 (2015/863/EU) compliant with exemption 6(a)-I and REACH (EC 1907/2006) compliance verified as of 06/14/2023. Thread direction: right hand with standard flat head profile.