S-91306A335 8-32 x 3/8" ASTM F835 Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 120,000 psi ensures reliable performance under high-stress conditions, reducing the risk of fastener failure in demanding applications.
• Superior corrosion resistance from zinc plating protects against rust and environmental damage, extending service life in harsh industrial environments.
• Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies, minimizing loosening over time.
• Robust Rockwell C39 hardness offers excellent wear resistance, maintaining thread integrity through repeated installations and removals.
• Convenient hex drive design with 3/32" size allows for easy installation and high torque application using standard tools, speeding up assembly processes.
• Full threading along the 3/8" length ensures maximum grip and load distribution across the entire fastener, enhancing joint stability.
• Compliance with major industry standards including ASME B18.3 and ASTM F835 guarantees consistent quality and interoperability with other components.

Professional Applications & Engineering Value

These 8-32 UNC coarse thread screws with zinc-plated alloy steel construction address critical engineering challenges in industrial settings. The coarse threading provides faster installation and superior resistance to vibration loosening in machinery, automotive, and electrical enclosures. The rounded button head profile creates a low-profile, snag-free surface ideal for applications where clearance is limited or safety is paramount. With fully threaded design and Class 3A fit, these screws deliver maximum clamping force and prevent cross-threading in high-precision assemblies. The combination of 120,000 psi tensile strength and Rockwell C39 hardness ensures they maintain integrity in high-stress applications, from heavy equipment to structural frameworks, while the hex drive enables efficient installation in confined spaces.

Specification Summary & Compliance

These screws feature precision UNC coarse threads with Class 3A fit for superior thread engagement and dimensional accuracy. Manufacturing complies with ASME B18.3 and ASTM F835 specifications, ensuring consistent performance. The products are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making them suitable for global industrial applications with strict material restrictions.