S-90484A242 10-24 x 1/2" ASME B18.3, ASTM F835 Tamper-Resistant Hex-Drive Steel Button Head Screws

Key Features & Benefits at a Glance

• Exceptional durability and corrosion resistance with black-oxide alloy steel construction, ideal for harsh industrial environments.
• Superior tamper-resistant security provided by the tamper-resistant hex drive, preventing unauthorized removal in public or sensitive applications.
• High-reliability fastening ensured by the Class 3A thread fit, offering tighter tolerances for secure, vibration-resistant assemblies.
• Maximum grip and load distribution from the fully threaded design and rounded button head, reducing the risk of material damage.
• Robust mechanical performance with a tensile strength of 130,000 psi and Rockwell C39 hardness, suitable for high-stress applications.
• Wide compatibility and easy installation thanks to the 10-24 UNC coarse thread, which allows for quick assembly and disassembly.
• Compliance with major industry standards including ASME B18.3, ensuring consistent quality and engineering precision.

Professional Applications & Engineering Value

These 10-24 UNC coarse thread rounded head screws are engineered to address critical challenges in industrial and mechanical assemblies. The black-oxide alloy steel material provides excellent resistance to corrosion and wear, extending service life in demanding conditions such as machinery, automotive, and electronic enclosures. The tamper-resistant hex drive enhances security, making them ideal for public infrastructure or equipment where vandalism is a concern. With a fully threaded design and Class 3A thread fit, they deliver superior clamping force and vibration resistance, reducing maintenance needs and downtime. This combination of high tensile strength and precise threading ensures reliable performance in high-load applications, offering long-term engineering value and cost efficiency.

Specification Summary & Compliance

This product features precise Class 3A thread fit and UNC coarse thread specifications, ensuring accurate and secure fastening. It meets ASME B18.3 manufacturing standards for dimensional consistency and performance. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmental safety and restricted substance control in industrial use.