S-92316A750 1/2"-20 x 1 1/4" IFI 111, SAE J429 High-Strength Grade 8 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 150,000 psi tensile strength for heavy-duty applications requiring maximum reliability
• 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 resistance and secure fastening
• Enhanced installation efficiency through external hex drive and flanged design for easier wrench access and increased bearing surface
• Guaranteed mechanical performance with Rockwell C32 hardness and Grade 8 classification for consistent strength under extreme conditions
• Full-threaded construction providing uniform stress distribution along the entire 1 1/4" length for improved joint integrity
• Regulatory compliance assurance meeting SAE J429, RoHS 3, and REACH standards for safe, environmentally responsible industrial use

Professional Applications & Engineering Value

Engineered for demanding 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 in manufacturing, heavy equipment, and structural assemblies exposed to moisture and chemicals. The UNF fine thread configuration offers superior resistance to vibrational loosening compared to coarse threads, making these fasteners ideal for machinery, automotive systems, and high-stress connections. With fully threaded design and external hex drive, installation becomes more efficient while maintaining consistent clamping force across the entire engagement length. The flanged head design eliminates the need for separate washers, reducing assembly time and providing wider load distribution.

Specification Summary & Compliance

This 1/2"-20 hex head screw features precise Class 2A thread fit per UNF standards with right-hand threading. Manufacturing complies with IFI 111 specification where identified as SAE J429 for Grade 8 mechanical properties. The fastener meets RoHS 3 (2015/863/EU) compliance for restricted substances and REACH (EC 1907/2006) regulations regarding chemical safety. With dimensions including 1 1/4" length, 3/4" head width, and 1 5/64" flange diameter, these screws maintain tight tolerances for reliable performance in critical applications.