S-92480A549 1/4"-20 x 1 1/4" ASME B18.6.3 Brass Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with brass construction for long-lasting performance in harsh environments
• Excellent tensile strength of 50,000 psi ensures reliable fastening under heavy loads
• Precise Class 2A thread fit provides smooth installation and secure connections
• Optimized Phillips No. 3 drive delivers efficient torque transfer and reduced cam-out
• 82° countersink angle enables flush mounting for clean, professional finishes
• Full threading along the entire 1-1/4" length maximizes grip and holding power
• Industry compliance with ASME B18.6.3 ensures dimensional accuracy and interchangeability

Professional Applications & Engineering Value

These 1/4"-20 UNC brass flat head screws deliver exceptional value in demanding industrial applications where corrosion resistance and reliability are paramount. The brass material provides natural resistance to galvanic corrosion, making them ideal for marine, electrical, and plumbing installations. The coarse UNC thread and Class 2A fit ensure quick assembly and secure fastening in soft materials and high-vibration environments. With Rockwell B50 hardness and 50,000 psi tensile strength, these fully threaded screws maintain integrity under stress while the Phillips drive and 82° countersink provide clean, flush installations in metal, wood, and composite materials.

Specification Summary & Compliance

Manufactured to exacting ASME B18.6.3 standards with Class 2A thread fit for precise dimensional accuracy. Features 1/4"-20 UNC coarse threads with right-hand direction and standard flat head profile. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe and sustainable fastening solutions for industrial applications.