S-97972A323 3/8"-16 x 3" Extreme-Strength Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 180,000 psi tensile strength for reliable performance in high-stress assemblies
• Enhanced corrosion resistance from the black-oxide steel finish, extending service life in harsh industrial environments
• Superior hardness rating of Rockwell C38 reduces wear and deformation under repeated torque applications
• Optimized thread engagement with Class 2A fit and UNC coarse threading ensures secure fastening and vibration resistance
• Integrated flange design with 5/8" diameter distributes clamping force evenly, eliminating the need for separate washers
• External hex drive compatibility allows for high-torque installation using standard industrial tools
• Partial threading configuration provides maximum grip length while maintaining unthreaded shank strength

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these black-oxide steel hex head screws solve critical fastening challenges in construction, heavy machinery, and structural assemblies. The 3/8"-16 UNC coarse thread configuration delivers superior pull-out resistance in wood, metal, and composite materials, while the partial threading design prevents thread stripping in soft substrates. The flanged head eliminates washer migration issues and provides 360° surface contact for improved joint stability. With Rockwell C38 hardness and 180,000 psi tensile strength, these external hex drive screws maintain integrity under dynamic loads and vibration, making them ideal for structural connections, equipment mounting, and industrial maintenance where reliability is paramount.

Specification Summary & Compliance

Manufactured to inch system standards with precise Class 2A thread fit tolerances for consistent engagement. The 3/8"-16 UNC coarse thread follows ASME B1.1 specifications, while the black-oxide surface treatment provides corrosion protection without dimensional alteration. These partially threaded hex head screws comply with industry standards for heavy-duty fasteners and meet RoHS/REACH environmental requirements for industrial use.