S-92224A232 1/4"-20 x 2 1/2" ASME B18.6.3 Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with black oxide steel finish for extended service life in demanding industrial environments
• Superior driving stability with No. 3 Phillips drive design that prevents cam-out and ensures secure installation
• High load-bearing capacity with 60,000 psi tensile strength and Rockwell B70 hardness for heavy-duty applications
• Reliable thread engagement through UNC coarse threading and Class 2A fit for vibration resistance and consistent fastening
• Optimized head design with standard pan profile providing excellent bearing surface and clearance
• Full threading capability allowing complete engagement along the entire 2-1/2" length for maximum holding power
• Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards including RoHS 3 and REACH

Professional Applications & Engineering Value

This 1/4-20 UNC fully threaded screw delivers exceptional engineering value for industrial assembly applications where vibration resistance and structural integrity are critical. The black oxide steel construction provides superior corrosion protection in manufacturing environments, while the coarse thread design ensures rapid installation and maintains secure fastening under dynamic loads. The Phillips pan head configuration offers optimal driver engagement and distributed clamping force, making these rounded head screws ideal for machinery assembly, equipment manufacturing, and structural frameworks requiring 60,000 psi tensile strength. The combination of Rockwell B70 hardness and precise Class 2A thread fit addresses common industrial challenges of thread stripping and fastener failure in high-stress applications.

Specification Summary & Compliance

This 2-1/2" length screw features precise Class 2A thread fit with 1/4"-20 UNC coarse threads and maintains dimensional accuracy per ASME B18.6.3 manufacturing specifications. The product is fully compliant with RoHS 3 (2015/863/EU) regulations and meets REACH (EC 1907/2006) requirements for hazardous substances, ensuring environmental responsibility in industrial applications while delivering consistent performance across manufacturing and assembly operations.