S-90409A113 1/4"-20 x 1" 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
- Maximum load-bearing capacity with 150,000 psi tensile strength for critical structural applications
- Superior corrosion resistance and durability through Grade 8 steel construction with Rockwell C32 hardness
- Enhanced grip and stability from the integrated flange design that distributes pressure evenly
- Quick installation and removal using standard external hex drive tools
- Reliable thread engagement with Class 2A UNC coarse threads for vibration resistance
- Full-length threading provides consistent holding power across the entire 1" length
- Compliance with industry standards including SAE J429 and IFI 111 specifications
Professional Applications & Engineering Value
This Grade 8 hex head screw delivers exceptional performance in demanding industrial environments where failure is not an option. The steel construction with Rockwell C32 hardness provides superior resistance to shear and tensile forces, making it ideal for heavy machinery, structural frameworks, and automotive assemblies. The 1/4"-20 UNC coarse thread configuration ensures rapid installation while maintaining vibration resistance in high-stress applications. The external hex drive allows for high torque application without stripping, and the integrated flange head eliminates the need for separate washers while providing superior clamping force distribution. These fully threaded fasteners are engineered to maintain integrity under extreme conditions, from construction equipment to manufacturing fixtures.
Specification Summary & Compliance
This Grade 8 hex head screw features precise Class 2A thread fit with 1/4"-20 UNC coarse threading and right-hand thread direction. Manufacturing complies with IFI 111/SAE J429 standards for dimensional accuracy and performance. The fastener meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements, ensuring safe use across various industrial sectors. Critical dimensions include 1" length, 9/16" flange diameter, and external hex drive compatibility with standard tools.
