S-90273A291 12-24 x 1/2" ASME B18.6.3 Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
• High-strength performance with 60,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing applications
• Effortless installation with Phillips No. 3 drive and fully threaded design for faster assembly and secure fastening
• Precise flush mounting featuring standard 82° countersink angle and flat head profile for seamless surface integration
• Consistent thread engagement with Class 2A thread fit and coarse 12-24 UNC threading ensuring vibration-resistant connections
• Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards including RoHS 3 and REACH
• Universal compatibility with inch system measurements and right-hand thread direction for broad industrial applicability

Professional Applications & Engineering Value

These 12-24 UNC flat head screws deliver exceptional engineering value through their zinc-plated steel construction and precision coarse threading. The combination of 60,000 psi tensile strength and Rockwell B70 hardness ensures reliable performance in high-stress applications where fastener failure is not an option. The fully threaded design provides maximum grip length and pull-out resistance, while the 82° countersink angle enables perfect flush mounting in machinery, electrical enclosures, and structural assemblies. The Phillips No. 3 drive offers efficient installation with standard tools, reducing assembly time and labor costs in manufacturing, maintenance, and repair operations across various industrial sectors.

Specification Summary & Compliance

These flat head screws maintain precise Class 2A thread fit tolerances with 12-24 UNC coarse threading and right-hand thread direction. Manufacturing adheres to ASME B18.6.3 specifications for dimensional accuracy and performance standards. Environmental compliance is verified through RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) certifications, ensuring safe use in regulated industries. The inch system measurements include 1/2" length, 0.412" head diameter, and standard flat head profile for consistent performance across applications.