S-92316A849 3/4"-10 x 3 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 assemblies
- Superior corrosion resistance due to black-phosphate steel coating, extending service life in harsh environments
- Optimized torque transmission via external hex drive and flange design, preventing loosening under vibration
- Reliable coarse thread engagement with UNC spacing and Class 2A fit, ensuring quick installation and secure fastening
- Reduced material stress concentration through partially threaded shank design, minimizing fracture risks
- Enhanced durability from Rockwell C32 hardness, maintaining structural integrity under repeated loads
- Regulatory compliance assurance meeting SAE J429, RoHS 3, and REACH standards for global supply chain compatibility
Professional Applications & Engineering Value
Engineered for heavy-duty industrial fastening, these Grade 8 hex head screws address critical challenges in machinery assembly, structural steel connections, and automotive frameworks. The black-phosphate steel construction combats oxidation in humid or chemically exposed environments, while the UNC coarse thread design enables rapid installation in thick materials without cross-threading risks. The integrated flange distributes clamping force evenly, eliminating the need for separate washers in high-vibration applications. With partial threading concentrating strength where needed most, these screws provide fail-safe performance in load-bearing joints subject to dynamic stresses.
Specification Summary & Compliance
Precision-manufactured to Class 2A thread fit tolerances with 3/4"-10 UNC coarse spacing and 3 1/2" length. Manufactured under IFI 111 specifications aligning with SAE J429 standards for Grade 8 mechanical properties. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations ensures unrestricted use in international industrial markets.
