S-97595A268 1/4"-20 x 1 1/4" ASME B18.3 Brass Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with brass material, ideal for harsh industrial environments and reducing maintenance costs.
• High-strength performance with 50,000 psi tensile strength and Rockwell B55 hardness, ensuring reliable load-bearing in demanding applications.
• Precise Class 3A thread fit for secure, vibration-resistant fastening in machinery and equipment assemblies.
• Easy installation and removal with 5/32" hex drive design, minimizing tool slippage and speeding up assembly processes.
• Standard 82° countersink angle allows for flush mounting, providing a smooth, professional finish in wood and metal surfaces.
• Fully threaded UNC coarse spacing ensures quick engagement and strong holding power in various materials.
• Compliance with ASME B18.3, RoHS 3, and REACH guarantees safety, quality, and environmental standards for global industrial use.

Professional Applications & Engineering Value

This 1/4"-20 brass flat head screw is engineered to address common industrial challenges such as corrosion, vibration loosening, and installation efficiency. The brass material offers excellent resistance to rust and galvanic corrosion, making it suitable for electrical enclosures, marine hardware, and plumbing systems. With a hex drive style and UNC coarse threads, it enables rapid, secure fastening in wood, plastic, and soft metals, reducing assembly time and improving productivity. The Class 3A thread fit ensures tight tolerances, minimizing the risk of thread stripping in high-stress applications like machinery frames and automotive components. Its fully threaded design and 82° flat head profile provide consistent clamping force and a flush finish, enhancing both performance and aesthetics in professional settings.

Specification Summary & Compliance

This screw features precise Class 3A thread fit and adheres to UNC thread standards with coarse spacing for reliable performance. Manufactured in compliance with ASME B18.3 specifications, it ensures dimensional accuracy and interchangeability. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental responsibility for industrial use.