S-97595A248 1/4"-20 x 2 1/2" ASME B18.3 Brass Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with durable brass construction, ideal for harsh industrial environments and marine applications.
• Exceptional thread engagement and vibration resistance from the Class 3A precision thread fit and coarse UNC threading, ensuring secure, long-lasting assemblies.
• High-strength performance with a 50,000 psi tensile strength and Rockwell B55 hardness for reliable use in demanding mechanical applications.
• Flush, clean installation with a standard 82° countersink angle and flat head design, providing a smooth surface finish.
• Efficient installation and removal using a common 5/32" hex drive, reducing assembly time and tool wear.
• Full-length threading offers maximum grip and adjustability along the entire 2 1/2" shank for versatile fastening solutions.
• Guaranteed quality and safety through compliance with ASME B18.3 specifications and environmental standards like RoHS 3 and REACH.

Professional Applications & Engineering Value

This 1/4-20 UNC brass flat head screw is engineered to solve critical challenges in industrial assembly, where corrosion, vibration loosening, and precise fit are major concerns. The durable brass material inherently resists rust and galvanic corrosion, making it perfect for electrical components, plumbing systems, and marine hardware. The Class 3A thread fit and coarse threading provide a tighter, more reliable connection that withstands dynamic loads and vibrations, reducing maintenance needs in machinery and equipment. With its fully threaded design and 82° countersink, it ensures a flush mount in pre-drilled holes, enhancing both aesthetic appeal and structural integrity in panels, fixtures, and enclosures. This screw delivers consistent performance, meeting the rigorous demands of industrial applications while adhering to key engineering standards.

Specification Summary & Compliance

This product features a 1/4"-20 UNC thread with a Class 3A precision fit, ensuring high dimensional accuracy and reliable performance. It is manufactured in accordance with ASME B18.3 specifications and is fully compliant with RoHS 3 (2015/863/EU) under exemption 6(a)-I and REACH (EC 1907/2006), confirming its suitability for regulated and environmentally conscious industrial markets.