S-92323A517 1/4"-20 x 7/8" IFI 111, SAE J429 Medium-Strength Grade 5 Steel Serrated-Flange Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with Grade 5 classification and 110,000 PSI tensile strength for reliable performance in demanding applications
• Enhanced corrosion resistance through zinc-plated steel construction, extending service life in industrial environments
• Secure anti-rotation locking provided by serrations on the flange, preventing loosening under vibration
• Optimized thread engagement with Class 2A UNC coarse threads ensuring quick assembly and reduced cross-threading risk
• Superior drive stability from the external hex head design allowing high torque application without stripping
• Full-length threading enabling maximum grip along the entire 7/8" shaft for uniform stress distribution
• Regulatory compliance assurance meeting SAE J429, RoHS 3, and REACH standards for global industrial use

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these Grade 5 hex head screws deliver critical reliability where vibration resistance and structural integrity are paramount. The zinc-plated steel construction provides essential corrosion protection in manufacturing plants, machinery assembly, and outdoor equipment. The combination of UNC coarse threading and Class 2A thread fit ensures rapid installation while maintaining precise tolerances, significantly reducing assembly time in production lines. The integrated flange with serrations eliminates the need for separate washers while providing superior clamping force and vibration resistance. With Rockwell C22 hardness and fully threaded design, these screws maintain their mechanical properties under sustained loads, making them ideal for structural frameworks, automotive components, and industrial machinery where failure is not an option.

Specification Summary & Compliance

This 1/4"-20 hex head screw features Class 2A thread fit per UNC standards with precise dimensional accuracy. Manufacturing specifications comply with IFI 111/SAE J429 standards for consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for international industrial markets.