S-90409A201 3/4"-10 x 2 1/2" IFI 111, SAE J429 High-Strength Grade 8 Steel Flanged Hex Head Screws
High-Strength Grade 8 Steel Flanged Hex Head 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 150,000 psi tensile strength, ideal for high-stress industrial environments
- Superior wear and deformation resistance due to Rockwell C32 hardness, ensuring long-term reliability
- Enhanced grip and stability from the integrated flange, reducing the need for separate washers
- Quick and secure installation with UNC coarse threading and external hex drive for efficient assembly
- Precise thread engagement with Class 2A fit, minimizing cross-threading risks in repetitive applications
- Full-length threading provides consistent clamping force along the entire 2 1/2" length
- Compliance with IFI 111/SAE J429 standards guarantees consistent quality and performance in regulated industries
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, this Grade 8 steel hex head screw delivers unmatched durability where failure is not an option. The fully threaded design ensures uniform stress distribution, while the UNC coarse thread resists vibration loosening in machinery, construction, and automotive assemblies. The flanged head eliminates washer requirements, speeding up installation in tight spaces. With 150,000 psi tensile strength and Rockwell C32 hardness, it withstands extreme loads and impacts, making it a reliable choice for structural frameworks, equipment mounting, and high-torque fastening systems demanding corrosion resistance and long service life.
Specification Summary & Compliance
This screw adheres to Class 2A thread fit tolerances for precise alignment and meets IFI 111/SAE J429 specifications for material and dimensional consistency. The 3/4"-10 UNC coarse thread and right-hand threading follow standardized industrial practices. Manufactured from high-tensile steel, it complies with industry-recognized benchmarks for mechanical properties, ensuring reliability in regulated applications without RoHS/REACH restrictions noted.
