S-91271A732 1/2"-13 x 5" 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 due to Class 3A thread fit ensuring precise assembly and vibration resistance
- Enhanced durability from alloy steel construction with Rockwell C37 hardness for long service life
- Efficient installation with external 12-point drive providing secure tool grip and torque transmission
- Integrated flange design eliminates need for separate washers while distributing clamping force evenly
- Optimized partial threading allows for focused grip where needed while maintaining shaft strength
- Regulatory compliance meets IFI 115 specifications and environmental standards (RoHS 3, REACH)
Professional Applications & Engineering Value
This 12-point flange screw delivers critical engineering solutions for industrial assemblies requiring high tensile strength and reliable fastening. The alloy steel construction with Rockwell C37 hardness provides exceptional resistance to deformation under heavy loads, while the Class 3A thread fit ensures precise mating with nuts and tapped holes in demanding environments. The integrated flange design serves as an embedded washer, distributing clamp load across wider surfaces to prevent material damage. Particularly valuable in heavy machinery, structural frameworks, and equipment manufacturing, this partially threaded configuration maintains full shank strength in non-threaded sections while providing secure fastening where needed. The external 12-point drive enables high-torque installation without slippage, making it ideal for maintenance-critical applications.
Specification Summary & Compliance
Manufactured to IFI 115 specifications with Class 3A thread fit and UNC coarse threading (1/2"-13) for optimal engagement in industrial applications. The 5" length with 1½" minimum thread length and 0.75" flange diameter provides consistent dimensional accuracy. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe usage across global industrial markets.
