S-92316A583 5/16"-18 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
- Exceptional load-bearing capability with 150,000 psi tensile strength for reliable performance in high-stress applications
- Superior corrosion resistance through black-phosphate steel coating, extending service life in demanding environments
- Precise thread engagement with Class 2A UNC coarse threads ensuring consistent installation and vibration resistance
- Enhanced torque transmission through external hex drive design for secure fastening with standard tools
- Optimized weight distribution with integrated flange design providing increased bearing surface area
- Maximum thread coverage with fully threaded shank for superior grip along the entire fastener length
- Industry compliance assurance meeting SAE J429 standards and RoHS 3/REACH environmental regulations
Professional Applications & Engineering Value
These Grade 8 hex head screws deliver critical performance advantages for heavy-duty industrial applications where failure is not an option. The black-phosphate steel construction provides essential corrosion protection in manufacturing environments exposed to moisture and chemicals, while the Rockwell C32 hardness ensures maintained thread integrity under repetitive stress cycles. The UNC coarse threading facilitates rapid assembly in production lines and resists loosening in high-vibration machinery. The external hex drive design allows for high-torque installation with common tools, making these fully threaded flange screws ideal for structural connections, equipment manufacturing, and automotive assemblies requiring 150,000 psi tensile strength reliability.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with UNC coarse thread specifications (5/16"-18) ensuring consistent mating with standard nuts and tapped holes. These fasteners comply with IFI 111/SAE J429 mechanical requirements for Grade 8 fasteners and meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance standards. The 1" length and 11/16" flange diameter provide dimensional consistency for engineering applications requiring precise clearances.
