S-90275A299 12-24 x 1 1/2" ASME B18.6.3 Steel Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 60,000 psi tensile strength for reliable performance in demanding applications
• Superior corrosion resistance through zinc-plated steel construction, extending service life in harsh environments
• Precision thread engagement with Class 2A fit ensuring consistent, secure fastening and reduced installation issues
• Optimal flush mounting thanks to the standard 82° countersink angle and flat head design for clean, professional finishes
• Enhanced installation control with slotted drive style providing straightforward tool compatibility and torque application
• Robust material integrity maintained through Rockwell B70 hardness, resisting deformation under stress
• Industry-standard compliance meeting ASME B18.6.3 specifications for guaranteed interoperability and quality

Professional Applications & Engineering Value

These 12-24 UNC flat head slotted screws deliver critical engineering solutions where flush surface mounting and high tensile strength are paramount. The zinc-plated steel construction provides essential corrosion protection for industrial equipment, machinery assemblies, and outdoor applications where environmental factors threaten fastener integrity. The coarse thread spacing and fully threaded design ensure maximum grip strength in various materials, while the standard 82° countersink angle allows for seamless integration into prepared surfaces. Particularly valuable in metal fabrication, electrical enclosures, and structural components, these screws address common challenges of vibration loosening, material compatibility, and long-term durability through their ASME B18.6.3 compliant manufacturing and right-hand thread configuration.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit per UNC specifications, ensuring consistent engagement and reliable performance. These 1-1/2" flat head screws feature coarse thread spacing with right-hand thread direction and maintain strict compliance with ASME B18.6.3 manufacturing standards. Environmental and safety certifications include full compliance with RoHS 3 (2015/863/EU) restrictions on hazardous substances and adherence to REACH (EC 1907/2006) regulations for chemical safety.