S-91271A644 3/8"-24 x 1 1/4" 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 load-bearing capacity with 170,000 psi tensile strength for reliable performance in high-stress applications
- Superior thread engagement with Class 3A fit UNF fine threads ensuring precise, vibration-resistant connections
- Enhanced installation efficiency through external 12-point drive design allowing high-torque application with standard tools
- Increased stability and distribution from integrated flange design eliminating the need for separate washers
- Long-term corrosion resistance through alloy steel construction with Rockwell C37 hardness for extended service life
- Regulatory compliance assurance meeting IFI 115 specifications and environmental standards including RoHS 3 and REACH
- Versatile full-thread design providing consistent clamping force along the entire 1-1/4" length for various material thicknesses
Professional Applications & Engineering Value
This 12-point alloy steel screw delivers critical engineering solutions for demanding industrial environments where vibration resistance and high tensile requirements are paramount. The 3/8"-24 UNF fine threads with Class 3A fit provide superior thread engagement in precision assemblies, reducing the risk of loosening under dynamic loads. The external 12-point drive configuration enables high-torque installation without stripping, while the integrated flange distributes clamping pressure evenly, preventing surface damage and eliminating washer requirements. Manufactured from alloy steel with Rockwell C37 hardness, this fully threaded fastener maintains integrity in heavy machinery, automotive systems, and structural applications where reliability cannot be compromised.
Specification Summary & Compliance
This precision-engineered 12-point screw features 3/8"-24 UNF fine threads manufactured to Class 3A thread fit tolerances for exceptional dimensional accuracy. The fastener complies with IFI 115 specifications for quality assurance and meets critical regulatory requirements including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance. With a standardized right-hand thread direction and fully threaded design, this industrial-grade component ensures consistent performance across applications requiring reliable, high-strength fastening solutions.
