S-92316A626 3/8"-16 x 1 1/4" IFI 111, SAE J429 High-Strength Grade 8 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 150,000 psi ensures reliable performance in high-stress industrial applications, preventing fastener failure.
• Superior corrosion resistance from the black-phosphate steel coating extends service life in harsh or outdoor environments.
• High hardness rating (Rockwell C32) provides excellent wear resistance and maintains thread integrity during repeated use.
• Integrated flange design eliminates the need for a separate washer, simplifying installation and providing a larger bearing surface.
• Coarse UNC threading with Class 2A fit allows for quicker assembly and better performance in materials prone to stripping.
• Full threading along the entire 1 1/4" length offers maximum grip and adjustment flexibility in various material thicknesses.
• External hex drive enables high torque application with standard tools, ensuring secure fastening in heavy-duty connections.

Professional Applications & Engineering Value

Engineered for demanding industrial environments, this Grade 8 hex head screw delivers critical reliability where failure is not an option. The black-phosphate steel construction provides essential corrosion protection for machinery, structural steel connections, and outdoor equipment exposed to weather elements. The 3/8"-16 UNC coarse thread configuration ensures rapid installation in steel framing, heavy equipment assembly, and automotive applications where vibration resistance is paramount. With its flanged design distributing clamp load effectively and fully threaded body accommodating various material thicknesses, this fastener solves common challenges of joint integrity and installation efficiency in construction, manufacturing, and maintenance operations requiring heavy-duty fastening solutions.

Specification Summary & Compliance

This fastener maintains Class 2A thread fit tolerances per UNC standards, ensuring consistent engagement and proper clearances. Manufacturing conforms to IFI 111/SAE J429 specifications for Grade 8 requirements, guaranteeing material and performance consistency. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting current environmental regulations for industrial use while maintaining the specified 150,000 psi tensile strength and Rockwell C32 hardness characteristics.