S-90272A951 1/2"-13 x 1" 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 industrial environments
• Excellent tensile strength rated at 60,000 PSI ensures reliable performance under heavy loads and vibration
• Enhanced durability with Rockwell B70 hardness, maintaining thread integrity through repeated installations
• Quick installation with Phillips No. 4 drive and fully threaded coarse spacing for efficient assembly operations
• Precise thread engagement with Class 2A fit UNC threads, providing consistent clamping force and reducing cross-threading risks
• Optimized head design with rounded pan profile offering improved clearance and professional appearance
• Regulatory compliance meeting ASME B18.6.3 specifications for dimensional accuracy and material standards

Professional Applications & Engineering Value

These zinc-plated steel rounded head screws with 1/2"-13 UNC coarse threading deliver exceptional value in industrial assembly applications where vibration resistance and corrosion protection are critical. The combination of 60,000 PSI tensile strength and Rockwell B70 hardness ensures reliable performance in heavy machinery, automotive components, and structural frameworks. The fully threaded design with Class 2A thread fit provides maximum engagement strength while the Phillips No. 4 drive enables efficient installation in high-volume production environments. The zinc plating offers essential protection against oxidation and environmental factors, making these industrial screws ideal for outdoor equipment, manufacturing fixtures, and maintenance applications requiring durable heavy-duty fasteners.

Specification Summary & Compliance

Manufactured to precise inch system dimensions with Class 2A thread fit tolerance per UNC standards, ensuring consistent performance across applications. These rounded head screws comply with ASME B18.6.3 specifications for dimensional accuracy and mechanical properties. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, confirming safe use in regulated industries. The right-hand thread direction and coarse thread spacing provide reliable fastening in various materials while maintaining the specified 1" length and 0.5" thread diameter for consistent application performance.