S-90279A201 8-32 x 1 1/4" ASME B18.6.3 Steel Round Head Phillips Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with zinc-plated steel construction for longer service life in demanding environments
• Superior driving efficiency with Phillips No. 2 drive that reduces cam-out and improves installation speed
• Excellent load-bearing capacity with 60,000 PSI tensile strength and Rockwell B69 hardness for reliable performance under stress
• Optimized thread engagement with UNC coarse threads and Class 2A fit ensuring secure fastening and vibration resistance
• Full-threaded design provides maximum grip length and uniform stress distribution across the entire fastener
• Rounded head profile offers a finished appearance while minimizing surface protrusion in assembled applications
• Regulatory compliance assurance meets ASME B18.6.3 specifications and environmental standards for global industrial use

Professional Applications & Engineering Value

These 8-32 UNC zinc-plated steel screws deliver exceptional engineering value across industrial and commercial applications where corrosion resistance and mechanical reliability are paramount. The rounded head Phillips design combines aesthetic appeal with practical installation benefits, while the coarse thread configuration ensures rapid assembly and superior holding power in materials where fine threads might strip. The zinc-plated finish provides essential protection against oxidation and environmental degradation, extending service life in electrical enclosures, machinery assemblies, and structural frameworks. With full threading along the entire 1-1/4" length, these fasteners distribute clamping forces evenly, preventing stress concentration and maintaining joint integrity in vibration-prone environments. The combination of 60,000 PSI tensile strength and standardized dimensions makes these screws ideal for OEM manufacturing, maintenance operations, and retrofit projects requiring dependable, code-compliant fastening solutions.

Specification Summary & Compliance

These rounded head Phillips screws feature precise Class 2A thread fit with UNC coarse thread profile (8-32 size) ensuring consistent engagement and reliable performance. Manufactured to ASME B18.6.3 specifications with dimensional accuracy including 0.309" head diameter and standardized right-hand threading. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming they contain no restricted substances above threshold limits. The inch system measurements and fully threaded design provide interchangeability and compatibility with standard industrial components and assembly requirements.