S-90273A196 8-32 x 5/8" ASME B18.6.3 Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ensuring long-lasting performance in demanding industrial environments
• Exceptional mechanical strength with 60,000 psi tensile strength and Rockwell B70 hardness, providing reliable fastening under high-stress conditions
• Precision thread engagement with Class 2A UNC coarse threads, enabling quick installation and secure fit in various materials
• Optimal flush mounting with standard 82° countersink angle and flat head design, creating smooth surface finishes without protrusions
• Efficient drive compatibility with No. 2 Phillips drive, allowing for high-torque application using common industrial tools
• Full-thread coverage along the 5/8" length, maximizing grip strength and load distribution across the entire fastener
• Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards for global industrial applications

Professional Applications & Engineering Value

These 8-32 UNC flat head screws deliver critical engineering solutions where flush surface requirements meet demanding mechanical performance needs. The zinc-plated steel construction provides essential corrosion protection for machinery, electrical enclosures, and assembly line equipment exposed to industrial atmospheres. The coarse UNC thread profile ensures rapid installation in both metallic and composite materials, while the Class 2A thread fit maintains consistent clamping force without galling or seizing. The 82° countersink angle perfectly mates with standard chamfered holes, eliminating protrusion issues in precision assemblies. With full threading along the entire 5/8" length, these Phillips drive screws distribute stress evenly, preventing localized failure points in vibration-prone applications across manufacturing, automotive, and electrical industries.

Specification Summary & Compliance

These flat head screws maintain Class 2A thread fit tolerance according to UNC standards, ensuring precise dimensional accuracy for consistent performance. Manufacturing strictly adheres to ASME B18.6.3 specifications for dimensional requirements and mechanical properties. Environmental compliance includes RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) compliance for chemical safety. The inch system measurements guarantee compatibility with North American industrial standards and tooling systems.