S-92480A874 1/4"-20 x 1 3/4" 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 and outdoor applications
• Excellent mechanical strength with 50,000 psi tensile strength and Rockwell B50 hardness for reliable, long-lasting fastening performance
• Precision thread engagement with Class 2A thread fit and UNC coarse threads ensuring easy installation and vibration resistance
• Optimal flush mounting with standard 82° countersink angle and flat head design for seamless surface integration
• Enhanced driving efficiency with No. 3 Phillips drive providing secure torque transfer and reduced cam-out risk
• Full thread coverage along the 1 3/4" length for maximum grip and load distribution in various material thicknesses
• Regulatory compliance assurance meeting ASME B18.6.3 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

These 1/4"-20 UNC brass flat head Phillips screws deliver critical engineering solutions where corrosion resistance and mechanical reliability are paramount. The brass material inherently resists galvanic corrosion and weathering, making these flat head screws ideal for marine equipment, electrical enclosures, and plumbing systems exposed to moisture. The coarse UNC threading provides superior holding power in soft materials and plastics, while the 82° countersink angle ensures flush seating without protrusion concerns. With fully threaded design and Class 2A thread fit, these screws maintain consistent clamping force in vibration-prone applications, from machinery assembly to architectural metalwork. The Phillips drive No. 3 configuration offers familiar, efficient installation across manufacturing and maintenance operations.

Specification Summary & Compliance

Manufactured to precise inch system dimensions with Class 2A thread fit tolerance ensuring consistent mating with standard nuts and tapped holes. Thread specifications conform to UNC coarse thread standards with 1/4"-20 threading and right-hand direction. Compliance includes ASME B18.6.3 mechanical standards for dimensional accuracy and performance, along with environmental regulations RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance for restricted substance management.