S-92316A810 5/8"-11 x 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 demanding structural and heavy machinery applications.
• Superior corrosion resistance provided by the black-phosphate steel coating, extending service life in harsh industrial environments.
• High-strength Grade 8 classification and Rockwell C32 hardness ensure reliable performance under high stress and vibration.
• Secure and stable fastening with the integrated flange, distributing clamp load effectively and eliminating the need for a separate washer.
• Easy installation and removal using standard wrenches on the 15/16" external hex head, saving time on assembly lines.
• Precise thread engagement with UNC coarse thread and Class 2A fit, reducing cross-threading risks in coarse-alignment scenarios.
• Regulatory peace of mind through compliance with IFI 111, SAE J429, RoHS 3, and REACH, ensuring material safety and quality.

Professional Applications & Engineering Value

This Grade 8 hex head screw is engineered to address critical challenges in heavy-duty assembly, where joint integrity is paramount. The black-phosphate steel construction provides a robust barrier against rust and chemical exposure, making it ideal for outdoor equipment, agricultural machinery, and automotive frames. The UNC coarse thread and partial threading design enhance grip in softer materials and allow for precise clamp force control. With its flanged head, it simplifies installation by combining bolt and washer functions, reducing part count and assembly time. These screws deliver reliable, long-lasting fastening in applications requiring high tensile strength and vibration resistance, such as structural steel connections and industrial conveyors, ensuring operational safety and reducing maintenance frequency.

Specification Summary & Compliance

This fastener features a 5/8"-11 UNC coarse thread with Class 2A thread fit for standard dimensional accuracy and ease of assembly. It meets manufacturing specifications under IFI 111 and SAE J429 for Grade 8 mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for industrial use across regulated markets.