S-94173A336 7/16"-20 x 1 3/4" 12-Point Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating, extending service life in demanding industrial environments
• Exceptional mechanical strength with 170,000 PSI tensile rating and Rockwell C38 hardness for heavy-duty applications
• Precise torque transmission through 12-point external drive design, preventing tool slippage and ensuring secure fastening
• Enhanced load distribution with integrated flange, reducing surface pressure and preventing material damage
• Reliable thread engagement with UNF fine threading and Class 2A fit, maintaining vibration resistance in critical assemblies
• Optimized partial threading allowing precise clamp force control while minimizing thread damage risks
• Industry-standard compatibility with inch-system tooling and right-hand thread direction for seamless integration

Professional Applications & Engineering Value

Engineered for high-stress industrial applications, this 12-point screw combines black-oxide alloy steel construction with precision UNF fine threading to address critical fastening challenges. The flanged design eliminates the need for separate washers while providing superior bearing surface distribution, particularly valuable in automotive assemblies and heavy machinery where vibration resistance is paramount. The external 12-point drive enables high-torque installation in confined spaces, while the partial threading ensures optimal clamp force concentration. With 170,000 PSI tensile strength and Rockwell C38 hardness, this fastener maintains structural integrity under extreme mechanical loads, making it ideal for critical bolting applications where failure is not an option.

Specification Summary & Compliance

Manufactured to inch system standards with precise Class 2A thread fit tolerance for consistent engagement. Features 7/16"-20 UNF fine threading with right-hand direction and partial threading configuration. Complies with industry-standard manufacturing specifications for alloy steel fasteners and meets material composition requirements for industrial applications. The black-oxide surface treatment provides corrosion protection while maintaining dimensional stability across temperature variations.