S-97972A511 1/2"-13 x 1" Extreme-Strength Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 180,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
• Corrosion-resistant black-oxide coating extends service life by protecting against rust and environmental damage in demanding industrial settings.
• Integrated flange design eliminates the need for a separate washer, providing a larger bearing surface for improved load distribution and simplified installation.
• UNC coarse threading with Class 2A fit offers faster assembly, easier alignment, and consistent performance in coarse thread applications.
• High Rockwell C38 hardness provides excellent wear resistance and durability, maintaining thread integrity through repeated use.
• External hex drive and hex head allow for high-torque installation with common tools, ensuring secure fastening in heavy-duty scenarios.
• Fully threaded shank maximizes grip and clamping force along the entire length, enhancing joint stability.

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these black-oxide steel hex head screws address critical challenges in machinery assembly, structural frameworks, and equipment manufacturing. The combination of 180,000 psi tensile strength and Rockwell C38 hardness ensures they withstand extreme loads and vibrations without stripping or shearing. The UNC coarse thread facilitates quick installation in softer materials or where rapid assembly is required, while the Class 2A fit provides consistent thread engagement without binding. The flange distributes pressure evenly, preventing surface damage and reducing stress concentration. Ideal for construction, automotive, and manufacturing sectors, these screws deliver long-term reliability and corrosion resistance, minimizing maintenance needs and downtime.

Specification Summary & Compliance

This 1/2"-13 x 1" hex head screw adheres to UNC coarse thread standards with a Class 2A fit for standard tolerance and easy assembly. Manufactured from high-strength steel with a black-oxide finish, it meets industry specifications for dimensional accuracy, including head width (9/16"), head height (15/32"), and flange diameter (27/32"). Compliant with relevant industrial standards for mechanical properties, it is suitable for applications requiring high tensile strength and durability. The product conforms to RoHS and REACH environmental directives, ensuring safe use in various sectors.