S-92224A237 1/4"-20 x 5" ASME B18.6.3 Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with black oxide coating for reliable performance in demanding industrial environments
• Superior holding power with 60,000 psi tensile strength and Rockwell B70 hardness for heavy-duty applications
• Quick installation and removal with No. 3 Phillips drive design and standard pan head profile
• Optimal thread engagement with UNC coarse threading and Class 2A fit for secure fastening in various materials
• Full-length threading provides maximum grip along the entire 5" length for enhanced load distribution
• Industry compliance assurance meeting ASME B18.6.3 standards and environmental regulations including RoHS 3 and REACH
• Right-hand thread direction ensures standard installation compatibility across industrial equipment and machinery

Professional Applications & Engineering Value

This black oxide steel Phillips pan head screw delivers exceptional engineering value for industrial assembly applications where corrosion resistance and high tensile strength are critical. The UNC coarse thread design with Class 2A fit provides superior pull-out resistance in metal, wood, and composite materials, while the fully threaded 5" length ensures maximum clamping force distribution. The No. 3 Phillips drive combined with the rounded pan head profile allows for efficient installation in confined spaces common in machinery assembly, electrical enclosures, and structural frameworks. The black oxide surface treatment significantly reduces oxidation in humid or chemically aggressive environments, extending service life while maintaining dimensional stability under loads up to 60,000 psi.

Specification Summary & Compliance

This 1/4"-20 x 5" fully threaded screw features precision UNC coarse threads with Class 2A thread fit tolerance for consistent engagement. Manufactured to ASME B18.6.3 specifications, the fastener ensures dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) restrictions on hazardous substances and meets REACH (EC 1907/2006) requirements for chemical safety, making it suitable for global industrial supply chains and environmentally conscious manufacturing operations.