S-97972A321 3/8"-16 x 2 1/2" Extreme-Strength Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide steel coating, ideal for harsh industrial environments.
• High tensile strength of 180,000 psi ensures reliable, long-lasting fastening under heavy loads.
• Flanged design provides a wider bearing surface, distributing load evenly and reducing surface damage.
• Coarse UNC threading allows for quick installation and strong holding power in various materials.
• Class 2A thread fit offers consistent, precise engagement for smooth assembly and disassembly.
• External hex drive enables easy tightening with standard tools, improving installation efficiency.
• Partially threaded shank enhances grip and prevents loosening in dynamic applications.

Professional Applications & Engineering Value

This 3/8"-16 UNC hex head screw is engineered with black-oxide steel and a flange to address common industrial challenges like vibration-induced loosening and corrosion. The coarse thread design ensures rapid installation in metal, wood, and composite materials, while the Class 2A thread fit guarantees precise alignment and reduced wear. With a Rockwell C38 hardness and 180,000 psi tensile strength, it provides dependable performance in heavy-duty applications such as machinery assembly, construction frameworks, and automotive components, minimizing maintenance needs and downtime.

Specification Summary & Compliance

This screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy. It features a 2 1/2" length, 5/16" head height, and 7/16" head width, manufactured to meet industry specifications for inch fasteners. Compliant with common industrial requirements, it ensures reliable performance in various engineering applications.