S-90273A449 1/2"-13 x 2" ASME B18.6.3 Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance through zinc plating, extending service life in demanding industrial environments
• Exceptional tensile strength of 60,000 psi ensures reliable performance under heavy loads and vibration
• Precision Class 2A thread fit provides consistent engagement and reduces cross-threading risks during assembly
• Full threading design offers maximum grip length and uniform stress distribution across applications
• Standard 82° countersink angle enables flush mounting for clean, professional finishes
• Coarse UNC thread pattern allows for faster installation and better performance in softer materials
• Phillips drive compatibility ensures widespread tool accessibility and efficient installation

Professional Applications & Engineering Value

These 1/2"-13 UNC flat head screws deliver exceptional engineering value through their zinc-plated steel construction and precision manufacturing. The combination of Rockwell B70 hardness and 60,000 psi tensile strength addresses critical industrial challenges including vibration resistance, material fatigue, and structural integrity maintenance. The fully threaded design ensures maximum holding power in wood, metal, and composite applications, while the standard 82° countersink angle provides seamless flush mounting for safety-critical and aesthetic-sensitive installations. These Phillips drive screws are particularly valuable in assembly lines, machinery manufacturing, and structural frameworks where reliability and compliance with industrial standards are paramount.

Specification Summary & Compliance

Manufactured to exacting ASME B18.6.3 specifications, these screws feature Class 2A thread fit tolerance for consistent performance and interchangeability. The coarse UNC thread pattern with 13 threads per inch ensures optimal engagement in various materials. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations guarantees environmental safety and material responsibility. The inch system measurements, including the precise 2" length and 0.5" thread diameter, maintain dimensional accuracy across production batches for reliable industrial application.