S-90393A126 1/2"-13 x 1" IFI 111, SAE J429 Medium-Strength Grade 5 Steel Serrated-Flange Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 120,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
• Rockwell C22 hardness provides superior resistance to wear and deformation, extending service life in demanding environments.
• Flanged design with serrations eliminates the need for separate washers and enhances anti-loosening capabilities, saving assembly time and improving safety.
• Class 2A thread fit on UNC coarse threads allows for easy installation and removal while maintaining secure fastening in various materials.
• Fully threaded shank offers consistent grip along the entire length, ensuring uniform load distribution and vibration resistance.
• External hex drive enables high-torque application with standard tools, facilitating quick and efficient maintenance or repairs.
• Compliance with SAE J429 and environmental standards guarantees consistent quality and safe use in regulated industrial sectors.

Professional Applications & Engineering Value

This Grade 5 hex head screw is engineered to address common industrial challenges such as joint integrity under dynamic loads and corrosion-prone settings. The UNC coarse thread design minimizes cross-threading risks during high-speed assembly, while the flanged head with serrations provides a firm locking action that counters vibration-induced loosening in machinery, automotive frames, and structural steel connections. Made from high-strength materials, it withstands harsh conditions without compromising on tensile strength or dimensional stability. Ideal for heavy-duty applications, this fully threaded screw ensures reliable performance in construction, manufacturing, and equipment maintenance, where SAE J429 compliance and precise Class 2A fit are critical for safety and efficiency.

Specification Summary & Compliance

This fastener adheres to IFI 111 specifications under SAE J429 for dimensional accuracy and mechanical properties, including Class 2A thread fit and UNC coarse threading. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial markets.