S-90273A296 12-24 x 1" 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
• Exceptional holding power from 60,000 psi tensile strength and Rockwell B70 hardness for reliable fastening performance
• Full-length threading ensures maximum grip and uniform load distribution across the entire fastener length
• Precision Class 2A thread fit provides consistent engagement and reduces cross-threading risks during installation
• Standard 82° countersink angle allows for flush mounting and clean, professional-looking installations
• Coarse UNC thread profile enables quick assembly and superior resistance to vibration loosening
• Phillips No. 3 drive offers efficient torque transfer and compatibility with standard industrial tools

Professional Applications & Engineering Value

These 12-24 UNC flat head Phillips screws deliver critical engineering advantages for industrial assembly applications where reliability and compliance are paramount. The zinc-plated steel construction provides essential corrosion protection in manufacturing environments, while the coarse UNC threading and Class 2A thread fit ensure rapid, secure installation without compromising joint integrity. The fully threaded design maximizes surface contact for superior vibration resistance in machinery, equipment frames, and structural components. The standard flat head profile with 82° countersink angle creates seamless, flush-mounted connections ideal for applications requiring smooth surfaces and aerodynamic profiles. These screws solve common industrial fastening challenges by combining high 60,000 psi tensile strength with consistent dimensional accuracy for predictable performance across production runs.

Specification Summary & Compliance

Manufactured to exacting ASME B18.6.3 specifications with Class 2A thread fit tolerances ensuring precise dimensional accuracy. These flat head screws feature UNC coarse threading with right-hand direction and are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The zinc-plated steel construction meets industrial standards for corrosion resistance while maintaining Rockwell B70 hardness and 60,000 psi tensile strength ratings for demanding applications.