S-90273A421 8-32 x 1 3/4" ASME B18.6.3 Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with zinc-plated steel construction for long-lasting performance in harsh industrial environments
• Superior holding power with 60,000 psi tensile strength and Rockwell B70 hardness ensuring reliable fastening under stress
• Precision thread engagement through Class 2A thread fit and UNC coarse threads for quick installation and vibration resistance
• Flush mounting capability with standard 82° countersink angle and flat head design for seamless surface integration
• Industry-compliant reliability meeting ASME B18.6.3 specifications for consistent quality and interchangeability
• Enhanced driving efficiency with Phillips No. 2 drive providing secure torque transfer and reduced cam-out risk
• Environmental compliance assurance with RoHS 3 and REACH regulations for safe usage in regulated applications

Professional Applications & Engineering Value

These 8-32 UNC zinc-plated steel flat head screws deliver critical engineering solutions where surface flushness and corrosion resistance are paramount. The fully threaded coarse spacing design ensures maximum thread engagement in various materials, while the 82° countersink angle provides optimal seating in machined surfaces. The zinc-plated finish creates a protective barrier against oxidation and chemical exposure, extending service life in manufacturing equipment, electrical enclosures, and assembly fixtures. With 60,000 psi tensile strength and Rockwell B70 hardness, these Phillips drive screws maintain structural integrity under dynamic loads, making them ideal for automotive components, machinery frames, and industrial controls where vibration resistance and reliable fastening are essential.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit and UNC thread form ensuring consistent performance. These 1-3/4" length flat head screws comply with ASME B18.6.3 mechanical and dimensional specifications. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to restricted substance requirements for industrial and commercial applications worldwide.