S-97715A566 5/16"-24 x 3/4" Brass Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from high-quality brass construction, ideal for harsh industrial environments and marine applications.
• Exceptional thread engagement and vibration resistance with a Class 3A fit and UNF fine thread profile, ensuring secure, long-lasting fastening.
• High tensile strength of 50,000 psi provides reliable performance under significant mechanical stress and load.
• Easy and secure installation with a 3/16" hex drive, allowing for high torque application without slippage.
• Durable and wear-resistant material with a Rockwell B55 hardness, maintaining integrity through repeated use.
• Full threading along the 3/4" length offers maximum grip and adjustability in a wide range of material thicknesses.
• Compliance with major environmental regulations including RoHS 3 and REACH, ensuring safety and suitability for global markets.

Professional Applications & Engineering Value

This 5/16"-24 UNF brass rounded head screw is engineered to solve critical challenges in precision assembly and corrosive environments. The brass material inherently resists rust and galvanic corrosion, making it perfect for electrical components, plumbing systems, and marine hardware where exposure to moisture is a concern. The Class 3A thread fit and UNF fine threading provide a tighter, more precise engagement than coarse threads, significantly reducing the risk of loosening under vibration—a common failure point in machinery and automotive applications. The button head style with a hex drive offers a low-profile, aesthetically clean finish while enabling high-torque installation in confined spaces. This combination of high tensile strength and environmental compliance delivers reliable, maintenance-free performance in demanding industrial settings.

Specification Summary & Compliance

This screw features a 5/16"-24 UNF thread with a Class 3A fit for high precision and a fine thread spacing. It is fully threaded with a length of 3/4" and a head diameter of 0.547". The drive is a 3/16" hex. Material specifications include brass with a hardness of Rockwell B55 and a tensile strength of 50,000 psi. The product is manufactured to be RoHS 3 (2015/863/EU) compliant under exemption 6(c) for lead in copper alloy and is REACH (EC 1907/2006) compliant.