S-97972A515 1/2"-13 x 1 1/2" Extreme-Strength Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 180,000 PSI ensures reliable performance in demanding applications, reducing the risk of fastener failure.
• Corrosion-resistant black-oxide steel provides enhanced durability and longevity, ideal for harsh industrial environments.
• Flanged head design eliminates the need for a separate washer, simplifying installation and distributing load more effectively.
• UNC coarse threading with Class 2A fit offers faster assembly and superior resistance to vibration loosening.
• Partially threaded shank allows for precise clamping force on specific joint areas, improving structural integrity.
• External hex drive enables high-torque installation with common tools, speeding up maintenance and assembly processes.
• Rockwell C38 hardness ensures high wear resistance, maintaining thread integrity over repeated use.

Professional Applications & Engineering Value

This 1/2"-13 UNC hex head screw is engineered to address critical challenges in heavy machinery, construction, and automotive assemblies where vibration resistance and high clamp load are paramount. The black-oxide steel material, combined with a flanged design, prevents corrosion and distributes stress evenly, reducing the risk of joint failure. The coarse thread and Class 2A fit ensure quick, secure fastening even in materials prone to stripping, while the partial threading allows for optimized grip length. Ideal for structural frames, equipment mounts, and other industrial fastening needs, it delivers consistent performance under high-stress conditions, minimizing downtime and maintenance costs.

Specification Summary & Compliance

This screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy. It features a 1/2"-13 coarse thread, 1-1/2" length, and partial threading up to a minimum of 1-1/4". Manufactured from black-oxide steel with a tensile strength of 180,000 PSI and Rockwell C38 hardness, it complies with industry standards for heavy-duty applications. The product meets common regulatory requirements for industrial fasteners, including RoHS and REACH, ensuring safe and environmentally conscious usage.