S-90272A547 1/4"-20 x 1 3/4" ASME B18.6.3 Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc plating for extended service life in demanding environments
• High tensile strength of 60,000 psi ensures reliable performance under heavy loads and vibration
• Excellent drive engagement with Phillips No. 3 drive for efficient installation and reduced cam-out
• Optimal thread engagement with UNC coarse threading and Class 2A fit for quick assembly and secure fastening
• Durable material construction featuring Rockwell B70 hardness steel for exceptional wear resistance
• Full threading design provides maximum grip length and uniform stress distribution
• Comprehensive regulatory compliance meeting ASME B18.6.3, RoHS 3, and REACH standards for global acceptance

Professional Applications & Engineering Value

This zinc-plated steel pan head screw delivers exceptional engineering value across industrial applications where corrosion resistance and high tensile strength are critical. The combination of UNC coarse threading and Class 2A thread fit ensures rapid installation in production environments while maintaining precise tolerances. The Phillips No. 3 drive provides superior torque transmission for efficient assembly operations. Engineered for heavy-duty fastening in machinery, equipment manufacturing, and structural applications, this fully threaded screw distributes clamping force evenly, preventing joint failure in high-vibration settings. The rounded pan head profile offers a low-profile finish while the zinc plating creates a protective barrier against environmental factors, making it ideal for outdoor equipment, industrial enclosures, and automotive assemblies where durability and regulatory compliance are paramount.

Specification Summary & Compliance

This fastener maintains Class 2A thread fit precision with UNC coarse threading (1/4"-20) and complies with ASME B18.6.3 manufacturing specifications. The product meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) regulations for chemical safety. Manufactured to exacting standards with 60,000 psi tensile strength and Rockwell B70 hardness, this screw delivers consistent performance across industrial applications requiring reliable mechanical fastening solutions.