S-92316A351 3/4"-16 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 capability with Grade 8 classification and 150,000 psi tensile strength for critical structural applications
- Superior corrosion resistance thanks to black-phosphate steel coating, extending service life in harsh industrial environments
- Precise thread engagement with UNF fine thread and Class 2A fit ensuring vibration-resistant connections
- Enhanced installation efficiency through external hex drive design allowing high-torque application with standard tools
- Eliminates need for separate washers with integrated flange design distributing clamp load over wider surface area
- Full threading versatility enabling secure fastening at any point along the 2½" length
- Certified reliability meeting SAE J429 and IFI 111 specifications for consistent performance
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these Grade 8 hex head screws deliver critical performance where failure is not an option. The black-phosphate steel construction provides essential corrosion protection for machinery, structural steel connections, and equipment exposed to moisture or chemicals. The UNF fine thread configuration offers superior resistance to vibrational loosening compared to coarse threads, making these flanged screws ideal for dynamic load applications in manufacturing, construction, and transportation equipment. With 150,000 psi tensile strength and Rockwell C32 hardness, they maintain integrity under extreme stress while the external hex drive ensures reliable installation even in high-torque scenarios.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with UNF fine thread (3/4"-16) specifications. Fully compliant with SAE J429 and IFI 111 standards for Grade 8 fasteners. Meets environmental regulations including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance. Features right-hand thread direction and fully threaded design with integrated flange (1 19/32" diameter) for optimal performance in demanding applications.
