S-91271A609 5/16"-24 x 1 1/4" IFI 115 12-Point Screws

Key Features & Benefits at a Glance

• Superior torque transmission with external 12-point drive design for reliable installation in high-stress applications
• Exceptional strength and durability from alloy steel construction with 170,000 psi tensile strength and Rockwell C37 hardness
• Precise thread engagement with Class 3A UNF fine threading ensuring secure, vibration-resistant connections
• Enhanced load distribution through integrated flange design that reduces surface pressure and prevents loosening
• Full-threaded construction providing maximum grip length and uniform stress distribution along the entire fastener
• Regulatory compliance assurance meeting IFI 115 specifications and environmental standards including RoHS 3 and REACH
• Optimal dimensional accuracy with inch system measurements ensuring perfect fit in industrial assemblies

Professional Applications & Engineering Value

This 12-point flanged screw delivers critical engineering solutions for demanding industrial applications where high torque transmission and reliable fastening are paramount. The alloy steel construction with Rockwell C37 hardness provides exceptional resistance to shear forces and fatigue, making it ideal for heavy machinery, automotive assemblies, and structural applications. The UNF fine threading with Class 3A fit ensures precise engagement in tapped holes, reducing the risk of cross-threading while maintaining vibration resistance. The integrated flange design distributes clamping force over a wider area, preventing surface damage and maintaining joint integrity under dynamic loads. These features combine to create a high-performance fastener that addresses common industrial challenges including vibration-induced loosening, material fatigue, and installation efficiency in critical assembly operations.

Specification Summary & Compliance

This precision 12-point screw features 5/16"-24 UNF fine threading with Class 3A thread fit for superior dimensional accuracy and tight tolerances. Manufactured to IFI 115 specifications with inch system measurements including 1-1/4" length and 15/32" flange diameter. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets. The fully threaded design and right-hand thread direction provide standardized installation compatibility for professional applications requiring consistent performance and regulatory adherence.