S-90409A117 1/4"-20 x 2" 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 environments, reducing the risk of fastener failure.
• Grade 8 steel construction with Rockwell C32 hardness provides superior durability and resistance to wear, extending service life in demanding applications.
• Flanged hex head design eliminates the need for a separate washer, offering faster assembly and improved load distribution.
• Partially threaded UNC coarse thread allows for easier alignment and secure fastening in coarse-grained materials, minimizing cross-threading.
• Class 2A thread fit ensures consistent, reliable engagement with standard nuts and tapped holes, reducing assembly errors.
• External hex drive enables high-torque installation with common tools, speeding up maintenance and production processes.
• Compliance with SAE J429, IFI 111, RoHS 3, and REACH guarantees adherence to industry standards and environmental regulations, ensuring safe and approved use.

Professional Applications & Engineering Value

This Grade 8 hex head screw is engineered to address common industrial challenges such as vibration loosening and material fatigue. The steel composition, combined with a Rockwell C32 hardness, offers excellent resistance to shear and tensile forces, making it ideal for heavy machinery, automotive assemblies, and structural frameworks. The flanged design distributes clamping force evenly, reducing point stress and preventing surface damage. With UNC coarse threading and a right-hand thread direction, it ensures quick, secure fastening in coarse substrates, while the partial threading allows for precise grip length control. This industrial hex bolt is a reliable choice for applications requiring 150,000 psi tensile strength and consistent performance under dynamic loads.

Specification Summary & Compliance

This fastener features a 1/4"-20 UNC coarse thread with Class 2A thread fit for standard dimensional accuracy. It meets SAE J429 and IFI 111 specifications, ensuring consistent manufacturing quality. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), it adheres to environmental and safety standards for industrial use.