S-91271A613 5/16"-24 x 2" IFI 115 12-Point Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capability with 170,000 psi tensile strength for reliable performance in demanding applications
• Superior thread engagement and vibration resistance through Class 3A thread fit and fine UNF thread spacing
• Enhanced durability and wear resistance from alloy steel construction with Rockwell C37 hardness rating
• Secure installation and removal with external 12-point drive that prevents tool slippage under high torque
• Increased stability and load distribution thanks to the integrated flange design that eliminates need for separate washers
• Optimized for high-stress applications with partial threading that concentrates strength where needed most
• Compliance with industry standards including IFI 115 specifications for consistent quality and performance

Professional Applications & Engineering Value

This 12-point flange screw delivers critical engineering advantages for industrial assembly challenges. The alloy steel construction combined with Rockwell C37 hardness provides exceptional resistance to shear forces and material fatigue in heavy machinery, automotive systems, and structural applications. The 5/16"-24 UNF fine threads with Class 3A fit ensure precise engagement in tapped holes, reducing the risk of cross-threading while maintaining vibration resistance in dynamic environments. The external 12-point drive allows for high-torque installation without cam-out, while the integrated flange design distributes clamping force evenly, preventing surface damage and eliminating the need for additional components. These features make it ideal for applications requiring repeated disassembly and reassembly without performance degradation.

Specification Summary & Compliance

This 12-point flange screw features precise 5/16"-24 UNF Class 3A threads with fine thread spacing and partial threading configuration. Manufactured to IFI 115 specifications, it maintains dimensional accuracy and mechanical properties required for critical applications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors while meeting international standards for hazardous substance restrictions.