S-91306A432 1/2"-13 x 1" 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.
• Class 3A thread fit provides superior precision and tighter tolerances for secure, vibration-resistant assemblies in critical machinery and equipment.
• Zinc-plated alloy steel construction offers excellent corrosion resistance, extending service life and reducing maintenance costs in harsh industrial environments.
• Fully threaded hex drive design allows for uniform load distribution and easy installation with standard tools, speeding up assembly processes.
• Coarse UNC threading enables quick engagement and strong holding power, ideal for applications requiring frequent disassembly and reassembly.
• Rockwell C39 hardness rating ensures high durability and wear resistance, maintaining thread integrity over repeated use.
• Compliance with ASME B18.3 and ASTM F835 standards guarantees consistent quality and interoperability, meeting rigorous industrial specifications.

Professional Applications & Engineering Value

These 1/2"-13 UNC rounded head screws are engineered to address common industrial challenges, such as vibration loosening and corrosion-induced failure. The zinc-plated alloy steel material provides a robust barrier against environmental factors, while the Class 3A thread fit ensures precise engagement that minimizes play in high-vibration settings like heavy machinery, automotive assemblies, and structural frameworks. The fully threaded hex drive design distributes stress evenly along the shaft, enhancing load-bearing capacity and reducing the risk of shear. Ideal for industrial and construction applications, these screws deliver reliable fastening in equipment requiring coarse thread efficiency and right-hand threading for standard tool compatibility.

Specification Summary & Compliance

This product features a 1/2"-13 UNC coarse thread with Class 3A fit for precise dimensional accuracy, ensuring tight tolerances per industry standards. Manufactured in accordance with ASME B18.3 and ASTM F835 specifications, it guarantees consistent performance. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental safety and material restrictions adherence, supporting sustainable procurement in global markets.