S-92316A536 1/4"-20 x 1/2" IFI 111, SAE J429 High-Strength Grade 8 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Maximum load-bearing capacity with Grade 8 classification and 150,000 psi tensile strength for critical structural applications
• Superior corrosion resistance through black phosphate steel coating that extends service life in harsh environments
• Enhanced torque transmission via external hex drive design that prevents tool slippage during installation
• Reliable thread engagement with UNC coarse threading and Class 2A fit ensuring consistent fastening performance
• Increased bearing surface from integrated flange design that distributes load pressure more effectively
• Full-threaded construction providing maximum grip length and adjustment flexibility across the entire fastener
• Industry compliance assurance meeting SAE J429 specifications for guaranteed mechanical properties

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these Grade 8 hex head screws deliver exceptional performance in heavy machinery, construction equipment, and automotive assemblies. The black phosphate steel construction provides superior corrosion protection while maintaining the high tensile strength required for structural connections. With UNC coarse threading and Class 2A thread fit, these fasteners ensure rapid installation and reliable performance in vibration-prone environments. The external hex drive design allows for high-torque application without stripping, while the flanged head eliminates the need for separate washers, streamlining assembly processes. These fully threaded screws are particularly valuable in applications requiring maximum thread engagement and adjustment capability.

Specification Summary & Compliance

This 1/4"-20 x 1/2" hex head screw features Class 2A thread fit per UNC standards with precise dimensional accuracy. Manufactured to SAE J429 specifications for Grade 8 fasteners, ensuring consistent mechanical properties including 150,000 psi tensile strength and Rockwell C32 hardness. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making them suitable for global industrial applications requiring strict chemical substance control.