S-90279A194 8-32 x 1/2" ASME B18.6.3 Steel Round Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding industrial environments
• Optimized torque transmission through Phillips No. 2 drive design, preventing cam-out during high-torque installations
• Enhanced load distribution with rounded head profile, minimizing surface damage and improving joint integrity
• Reliable fastening performance with 60,000 psi tensile strength and Rockwell B69 hardness, ensuring consistent clamping force
• Quick installation advantage through coarse UNC threading and full-thread design, reducing assembly time in production lines
• Precision thread engagement with Class 2A fit, providing consistent mating with standard nuts and threaded components
• Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards for global manufacturing

Professional Applications & Engineering Value

These 8-32 UNC zinc-plated steel screws deliver critical performance advantages in industrial assembly applications where vibration resistance and environmental durability are paramount. The fully threaded coarse spacing design ensures maximum thread engagement in both metallic and composite materials, preventing loosening under dynamic loads. The zinc-plated surface treatment creates a sacrificial barrier against oxidation and chemical exposure, making these rounded head Phillips screws ideal for electrical enclosures, machinery guards, and outdoor equipment assemblies. With 60,000 psi tensile strength backing every installation, engineers can specify these fasteners with confidence for critical joints in manufacturing equipment, automotive components, and structural frameworks where failure is not an option.

Specification Summary & Compliance

Manufactured to ASME B18.6.3 standards with Class 2A thread fit tolerance for consistent mating performance. The 8-32 UNC coarse thread configuration ensures reliable engagement across multiple applications. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, these screws meet international requirements for hazardous substance restrictions. The combination of Rockwell B69 hardness and precise dimensional control guarantees repeatable performance in automated assembly systems and manual installations alike.