S-97972A317 3/8"-16 x 1 1/2" Extreme-Strength Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with black-oxide steel coating for prolonged service life in harsh industrial environments
• Superior load-bearing capacity with 180,000 PSI tensile strength ensuring reliable performance under extreme mechanical stress
• Enhanced stability and alignment through integrated flange design that eliminates the need for separate washers
• Optimized thread engagement with Class 2A thread fit providing consistent fastening while maintaining easy assembly
• Robust mechanical properties featuring Rockwell C38 hardness for excellent wear resistance and durability
• Efficient installation with external hex drive and coarse UNC threading enabling quick assembly in time-sensitive operations
• Versatile partial threading allowing precise control over clamping force distribution across joined components

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these black-oxide steel hex head screws deliver exceptional performance where corrosion resistance and structural integrity are paramount. The 3/8"-16 UNC coarse threading ensures rapid installation in production environments while maintaining secure fastening in vibrating machinery. The integrated flanged design provides superior load distribution, preventing surface damage and maintaining joint integrity under dynamic loads. With 180,000 PSI tensile strength and Rockwell C38 hardness, these screws withstand extreme mechanical stress in heavy equipment, automotive assemblies, and structural frameworks. The partial threading configuration allows engineers to precisely control clamping force, making them ideal for applications requiring specific shear plane positioning.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit tolerance ensuring consistent performance across production runs. The UNC coarse thread series follows ASME B1.1 specifications, while the black-oxide surface treatment provides corrosion protection without dimensional alteration. These screws comply with industrial standards for inch-system fasteners and meet material composition requirements for general industrial applications. The manufacturing process ensures compliance with standard industrial specifications for dimensional accuracy and mechanical properties.