S-91306A274 10-32 x 5/8" ASTM F835 Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 120,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
• Class 3A thread fit provides superior precision and tighter tolerances for secure, vibration-resistant assemblies in demanding environments.
• Zinc-plated alloy steel construction offers excellent corrosion resistance, extending service life and reducing maintenance costs.
• Fully threaded design allows for maximum grip and uniform load distribution along the entire length, enhancing joint integrity.
• Hex drive (1/8") with rounded button head enables easy installation and a low-profile finish, minimizing snagging and improving aesthetics.
• Rockwell C39 hardness ensures high durability and wear resistance, maintaining thread integrity through repeated use.
• Compliance with ASME B18.3 and ASTM F835 guarantees consistent quality and interoperability with standard components, streamlining procurement.

Professional Applications & Engineering Value

These 10-32 UNF rounded head screws are engineered to address common industrial challenges such as vibration loosening and corrosion in harsh environments. The fine thread spacing and Class 3A thread fit provide superior holding power, making them ideal for precision assemblies in machinery, automotive, and electronics where zinc-plated alloy steel offers reliable protection against rust. The fully threaded design ensures maximum engagement in thin materials, while the hex drive allows for high-torque installation without stripping. Suitable for applications requiring high tensile strength and compliance with rigorous standards, these screws deliver long-term reliability and reduce downtime in industrial fastening systems.

Specification Summary & Compliance

This product features a 10-32 UNF fine thread with Class 3A precision fit, ensuring tight tolerances per industry standards. Dimensions include a 5/8" length, 0.361" head diameter, and right-hand threading. Manufactured in accordance with ASME B18.3 and ASTM F835 specifications, it meets strict performance criteria. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial markets.