S-91271A648 3/8"-24 x 2" IFI 115 12-Point Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi provides superior load-bearing capacity for demanding industrial applications.
• High hardness rating (Rockwell C37) ensures excellent wear resistance and long-term durability under repetitive stress.
• Precision Class 3A thread fit guarantees tight, secure fastening with minimal risk of loosening in high-vibration environments.
• 12-point external drive and head design allows for higher torque application and easier installation in confined spaces.
• Integrated flange distributes clamping force evenly, eliminating the need for separate washers and simplifying assembly.
• Partial threading provides unthreaded shank strength where needed, ideal for shear-critical connections.
• Fine UNF thread spacing offers improved adjustment precision and superior resistance to vibrational loosening compared to coarse threads.

Professional Applications & Engineering Value

This 12-point flange screw is engineered to solve critical fastening challenges in heavy machinery, automotive assemblies, and structural frameworks where high tensile strength and vibration resistance are paramount. The alloy steel construction combined with a Class 3A UNF fine thread ensures reliable performance under dynamic loads, preventing joint failure. The external 12-point drive facilitates quick installation with standard tools, even in tight access areas, while the built-in flange enhances stability by increasing the bearing surface. Its partial threading design is optimal for applications requiring precise clamp load control and increased shear strength, making it a trusted choice for engineers specifying industrial-grade fasteners that must endure extreme operational conditions without compromising on compliance or safety.

Specification Summary & Compliance

This screw features a 3/8"-24 UNF fine thread with Class 3A fit for high-precision engagement, a 2" length, and a 9/16" flange diameter. It is manufactured to meet IFI 115 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring it is free of restricted hazardous substances and suitable for global industrial supply chains.