S-92327A820 3/8"-16 x 2 1/2" ASME B18.2.1, SAE J429 Square Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 120,000 psi tensile strength for reliable performance in high-stress applications
• Superior corrosion resistance through zinc yellow-chromate plating, extending service life in harsh environments
• Precise thread engagement with Unified Standard Class 3A fit ensuring secure fastening and vibration resistance
• Optimized drive efficiency through external square head design providing maximum torque transmission
• Enhanced durability with Rockwell C25 hardness maintaining structural integrity under repeated use
• Versatile coarse threading (UNC) enabling quick installation and superior performance in various materials
• Industry-standard compliance meeting ASME B18.2.1 and SAE J429 specifications for guaranteed quality and interchangeability

Professional Applications & Engineering Value

This Grade 5 square head screw delivers critical engineering solutions for industrial applications requiring high-strength fastening. The 3/8"-16 UNC coarse thread configuration provides excellent grip in soft materials and rapid installation in production environments. The zinc yellow-chromate plating creates a protective barrier against corrosion, making it ideal for outdoor equipment, machinery assemblies, and structural applications exposed to moisture. The external square drive design allows for high-torque installation without cam-out, while the fully threaded construction ensures consistent clamping force distribution. These steel fasteners are engineered to maintain integrity in heavy-duty applications where vibration resistance and long-term reliability are paramount.

Specification Summary & Compliance

Manufactured to precise Unified Standard Class 3A thread tolerances ensuring proper fit and function. The coarse thread (UNC) configuration follows standardized pitch dimensions for compatibility across industrial applications. Complies with ASME B18.2.1 dimensional specifications and SAE J429 material standards for Grade 5 fasteners, guaranteeing consistent quality and performance. The 2-1/2" length and 3/8"-16 thread size maintain strict dimensional accuracy for reliable installation and interchangeability. Meets industry requirements for material composition and mechanical properties as specified in relevant industrial standards.