S-90272A124 5-40 x 1/4" ASME B18.6.3 Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding environments
• Optimized torque transmission through No. 2 Phillips drive design, reducing cam-out and tool slippage during installation
• Reliable thread engagement with fully threaded UNC coarse spacing, ensuring secure fastening across various material thicknesses
• Consistent mechanical performance with 60,000 psi tensile strength and Rockwell B70 hardness, preventing premature failure under stress
• Precision manufacturing to Class 2A thread fit standards, guaranteeing interchangeability and reducing assembly time
• Broad compatibility with standard pan head profile, accommodating common counterbore dimensions in industrial equipment
• Regulatory compliance assurance meeting ASME B18.6.3, RoHS 3, and REACH requirements for global supply chain integration

Professional Applications & Engineering Value

These 5-40 UNC machine screws deliver exceptional value in industrial assembly where vibration resistance and consistent clamping force are critical. The zinc-plated steel construction provides essential corrosion protection for electrical enclosures, machinery guards, and automotive components exposed to moderate environmental conditions. The combination of coarse thread spacing and Class 2A thread fit ensures rapid installation in tapped holes while maintaining precise alignment in high-volume production environments. The standard pan head with Phillips drive offers reliable torque transfer for maintenance operations where accessibility may be limited. Engineered to withstand repetitive stress cycles, these fully threaded fasteners prevent loosening in vibrating assemblies while their 60,000 psi tensile strength provides a safety margin for critical joints in industrial equipment and commercial applications.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit tolerance for consistent performance across applications. Thread specifications conform to 5-40 UNC coarse thread series with right-hand orientation. Compliance with ASME B18.6.3 manufacturing standards ensures dimensional interchangeability. Meets environmental regulations including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) requirements for hazardous substance restrictions.