S-94173A316 5/16"-24 x 2 1/2" 12-Point Screws

Key Features & Benefits at a Glance

• Superior torque transmission with external 12-point drive design for secure installation in high-vibration environments
• Exceptional durability from Rockwell C38 hardness alloy steel construction for extended service life
• Reliable load-bearing capacity with 170,000 PSI tensile strength for demanding industrial applications
• Enhanced corrosion resistance through black-oxide surface treatment for improved performance in harsh conditions
• Precise thread engagement with UNF fine thread and Class 2A fit ensuring consistent fastening performance
• Integrated flange design eliminates need for separate washers while providing superior load distribution
• Optimized partial threading allows for maximum grip length while maintaining unthreaded shank strength

Professional Applications & Engineering Value

This 12-point flange screw delivers exceptional engineering value in industrial and automotive applications where vibration resistance and high torque requirements are critical. The black-oxide alloy steel construction provides superior corrosion protection while maintaining the 170,000 PSI tensile strength needed for heavy-duty assemblies. The external 12-point drive system enables maximum torque application without stripping, while the UNF fine thread ensures precise clamping force in critical connections. The integrated flange design distributes load evenly across surfaces, preventing damage to softer materials and eliminating the need for additional components. This combination of features makes it ideal for engine components, machinery assemblies, and structural applications where reliability and performance cannot be compromised.

Specification Summary & Compliance

This 5/16"-24 UNF screw features Class 2A thread fit for standard industrial applications, ensuring proper clearance and engagement. The partially threaded design provides optimal strength characteristics with a minimum thread length of 1 inch. Manufactured from alloy steel with Rockwell C38 hardness, this fastener meets industry standards for high-strength applications. The black-oxide surface treatment enhances corrosion resistance while maintaining dimensional accuracy. Complies with standard industrial specifications for 12-point screws and is suitable for use in applications requiring reliable, high-torque fastening solutions.