S-91271A638 3/8"-16 x 3 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 strength and durability with 170,000 psi tensile strength and Rockwell C37 hardness for reliable performance in demanding applications.
- Superior thread engagement and precision with Class 3A thread fit and UNC coarse threading, ensuring secure, vibration-resistant connections.
- Integrated flange design eliminates the need for a separate washer, providing a larger bearing surface and faster assembly.
- High-torque capability from the external 12-point drive, allowing for efficient installation with standard tools in confined spaces.
- Partial threading offers unthreaded shank strength where needed, ideal for shear-critical and structural applications.
- Compliance with major industry standards including IFI 115, RoHS 3, and REACH, ensuring safety and environmental responsibility.
- Corrosion-resistant alloy steel construction provides long service life and reliability in harsh industrial environments.
Professional Applications & Engineering Value
This 12-point flanged screw is engineered to solve critical fastening challenges in heavy machinery, construction, and automotive assemblies. The high-strength alloy steel and Class 3A thread fit deliver exceptional clamp load and vibration resistance, preventing joint failure under dynamic loads. The integrated flange distributes pressure evenly, reducing surface damage and simplifying installation. With 3/8"-16 UNC coarse threading and a partially threaded design, it provides optimal grip in materials prone to stripping and is ideal for structural connections requiring both tensile and shear strength. Its external 12-point drive ensures high torque application, making it a top choice for industrial applications where reliability and efficiency are paramount.
Specification Summary & Compliance
This screw adheres to precise dimensional standards with a Class 3A thread fit and UNC coarse thread profile, ensuring consistent performance. It meets IFI 115 specifications for quality and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental suitability for global industrial use.
