S-91271A546 1/4"-20 x 1 1/2" IFI 115 12-Point Screws
12-Point Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Exceptional tensile strength of 170,000 PSI ensures reliable performance in high-stress industrial applications, reducing the risk of fastener failure.
- Class 3A thread fit provides superior precision and tight tolerances, minimizing backlash and improving assembly accuracy in critical machinery.
- Flanged design with 12-point external drive offers enhanced torque transmission and easy installation, even in confined spaces, boosting efficiency.
- Alloy steel construction with Rockwell C37 hardness delivers excellent durability and resistance to wear, extending service life in demanding environments.
- Partial threading allows for secure clamping and reduced thread wear, ideal for applications requiring precise load distribution.
- Compliance with IFI 115, RoHS 3, and REACH standards ensures environmental safety and regulatory adherence, supporting sustainable procurement practices.
- Coarse UNC thread spacing facilitates quick assembly and disassembly, saving time in maintenance and repair operations.
Professional Applications & Engineering Value
This 1/4"-20 UNC 12-point flange screw is engineered to address common industrial challenges, such as vibration-induced loosening and high-load fatigue. Made from high-strength alloy steel, it maintains integrity under extreme conditions, making it ideal for heavy machinery, automotive assemblies, and construction equipment. The external 12-point drive and flanged head provide superior grip and distribute clamping force evenly, reducing the need for additional washers. With a Class 3A thread fit and partial threading, it ensures precise alignment and secure fastening in applications like engine components or structural frames, where reliability is critical. Its compliance with IFI 115 and environmental regulations further enhances its value in global supply chains.
Specification Summary & Compliance
This screw features a 1/4"-20 UNC thread with Class 3A fit for high precision, a length of 1 1/2", and a flange diameter of 3/8". It adheres to IFI 115 manufacturing standards and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring it meets rigorous safety and environmental requirements for industrial use.
