S-92316A337 3/8"-24 x 2 1/2" 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, ideal for high-stress industrial environments.
• Superior corrosion resistance due to the black-phosphate steel coating, extending service life in demanding conditions.
• Reliable torque transmission enabled by the external hex drive and flange design, preventing loosening under vibration.
• Precise thread engagement with UNF fine thread and Class 2A fit, ensuring secure fastening and reduced risk of cross-threading.
• Optimized weight distribution from the partially threaded shank, enhancing structural integrity in assembled components.
• High durability backed by Rockwell C32 hardness, maintaining performance under repetitive mechanical stress.
• Broad regulatory compliance including RoHS 3 and REACH, meeting international environmental and safety standards.

Professional Applications & Engineering Value

This Grade 8 hex head screw is engineered for heavy-duty applications where failure is not an option. The black-phosphate steel construction provides a protective barrier against rust and corrosion, making it suitable for outdoor machinery, automotive assemblies, and construction equipment exposed to harsh elements. The UNF fine thread and Class 2A fit deliver superior clamping force and vibration resistance, critical in dynamic load scenarios such as engine mounts or structural frameworks. The flanged design eliminates the need for separate washers, streamlining installation and reducing assembly time. With a 2 1/2" length and partial threading, it offers flexibility in joint design, allowing for unthreaded shank areas to bear shear loads effectively. Ideal for industries requiring high tensile strength and compliance with SAE J429 specifications, this fastener ensures long-term reliability in mission-critical systems.

Specification Summary & Compliance

This screw adheres to precise dimensional tolerances, including Class 2A thread fit for consistent engagement and UNF fine thread (3/8"-24) specifications. Manufacturing follows IFI 111/SAE J429 standards, guaranteeing material and performance consistency. 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 worldwide.