S-91271A573 1/4"-28 x 1 1/4" IFI 115 12-Point Screws

Key Features & Benefits at a Glance

• Superior torque transmission with external 12-point drive for secure installation in high-stress applications
• Exceptional tensile strength of 170,000 psi withstands extreme mechanical loads without failure
• Precision Class 3A thread fit ensures reliable engagement and vibration resistance in critical assemblies
• Integrated flange design eliminates need for separate washers while distributing clamp load effectively
• Alloy steel construction with Rockwell C37 hardness provides optimal balance of strength and durability
• Full threading along the entire 1-1/4" length enables maximum adjustment flexibility
• Regulatory compliance with IFI 115, RoHS 3 and REACH standards ensures environmental and safety conformity

Professional Applications & Engineering Value

These 12-point flanged screws deliver exceptional performance in demanding industrial environments where vibration resistance and precise torque application are critical. The alloy steel composition, combined with Rockwell C37 hardness, provides superior resistance to shear forces and fatigue in heavy machinery, automotive systems, and precision equipment. The 1/4"-28 UNF fine thread spacing offers enhanced load distribution compared to coarse threads, while the Class 3A thread fit maintains tight tolerances in high-vibration applications. The integrated flange eliminates potential failure points from separate washers, making these industrial screws ideal for assembly lines where reliability and speed of installation are paramount.

Specification Summary & Compliance

Manufactured to exacting IFI 115 specifications with Class 3A thread fit precision for superior engagement. Features 1/4"-28 UNF fine threads with right-hand orientation and full threading along the 1-1/4" length. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe usage across global industrial markets.