S-92316A311 1/4"-20 x 3/8" 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 through black phosphate coating that withstands harsh industrial environments
- Enhanced durability with Rockwell C32 hardness maintaining performance under repeated stress
- Reliable thread engagement through Class 2A UNC coarse threads for easier assembly and vibration resistance
- Simplified installation with external hex drive design allowing high torque application
- Increased bearing surface from integrated flange design distributing load more effectively
- Full-thread coverage ensuring maximum grip strength across the entire fastener length
Professional Applications & Engineering Value
These Grade 8 hex head screws deliver exceptional engineering value in demanding industrial applications where failure is not an option. The black phosphate steel construction provides superior corrosion protection for machinery, automotive assemblies, and structural frameworks exposed to environmental challenges. The UNC coarse thread design ensures rapid installation and maintains integrity in high-vibration environments, while the fully threaded configuration offers maximum clamping force throughout the engagement length. The external hex drive accommodates high torque requirements during assembly, making these flanged screws ideal for heavy equipment, construction machinery, and industrial manufacturing where 150,000 psi tensile strength is critical for safety and performance.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with UNC coarse threading (1/4"-20) ensuring consistent performance. Complies with IFI 111/SAE J429 specifications for Grade 8 fasteners, guaranteeing material and dimensional accuracy. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance standards for industrial applications worldwide. The 3/8" length and 9/16" flange diameter provide dimensional consistency for reliable integration into engineered assemblies.
