S-90273A065 2-56 x 3/8" 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
• Reliable fastening performance with 60,000 psi tensile strength and Rockwell B70 hardness to withstand high-stress applications
• Precise flush mounting thanks to standard 82° countersink angle and flat head design for seamless surface integration
• Efficient installation with No. 1 Phillips drive providing secure tool engagement and reduced cam-out risk
• Consistent thread engagement through fully threaded UNC coarse spacing and Class 2A fit for reliable assembly
• Broad industrial compatibility meeting ASME B18.6.3 specifications for standardized applications
• Environmental compliance assurance with RoHS 3 and REACH regulations for global manufacturing requirements

Professional Applications & Engineering Value

These 2-56 UNC flat head Phillips screws deliver critical engineering solutions where surface-flush fastening and high tensile strength are paramount. The zinc-plated steel construction provides essential corrosion protection for industrial equipment, electronic enclosures, and machinery assemblies exposed to harsh conditions. The coarse thread spacing ensures rapid installation and superior holding power in softer materials, while the fully threaded design maintains consistent clamping force across the entire 3/8" length. The No. 1 Phillips drive offers reliable torque transmission, reducing installation time and minimizing fastener damage. These screws are engineered to address common industrial challenges including vibration resistance, dimensional stability, and compliance with international standards.

Specification Summary & Compliance

This fastener maintains Class 2A thread fit tolerances per UNC standards, ensuring precise dimensional accuracy for consistent assembly performance. Manufacturing complies with ASME B18.6.3 specifications for flat head screw geometry and mechanical properties. The product meets RoHS 3 (2015/863/EU) compliance for restricted substances and REACH (EC 1907/2006) regulations, confirming environmental responsibility and global market acceptability. Thread specifications include right-hand direction, UNC thread type, and coarse spacing optimized for industrial applications requiring reliable, high-strength fastening solutions.