S-97763A300 2-56 x 1/8" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from Black-Oxide 18-8 Stainless Steel, ideal for harsh environments and extended service life.
• High tensile strength of 70,000 psi ensures reliable fastening under significant mechanical stress and vibration.
• Precise Class 3A thread fit provides excellent engagement and reduces the risk of cross-threading during assembly.
• Hex drive (0.050") design allows for secure tool engagement and high torque application without slippage.
• Fully threaded 1/8" length offers maximum grip and holding power in shallow or limited-space applications.
• Rounded button head profile delivers a low-profile, finished appearance while minimizing snagging risks.
• Compliance with ASME B18.3, RoHS 3, and REACH guarantees adherence to strict industrial safety and environmental standards.

Professional Applications & Engineering Value

This 2-56 UNC Rounded Head Screw is engineered for precision assembly in demanding sectors like electronics, aerospace, and medical devices. The Black-Oxide 18-8 Stainless Steel construction provides enhanced corrosion resistance, crucial for operations in humid or chemically aggressive settings. Its coarse thread spacing and Class 3A fit ensure quick, secure installation with minimal risk of stripping, while the hex drive facilitates efficient torque transfer in confined spaces. The fully threaded design and 70,000 psi tensile strength offer reliable performance in high-vibration applications, preventing loosening and maintaining structural integrity over time.

Specification Summary & Compliance

This screw features a 2-56 UNC thread size with Class 3A thread fit for precise dimensional accuracy and secure fastening. It is manufactured in accordance with ASME B18.3 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets rigorous environmental and safety standards for industrial use.