S-92316A231 3/4"-10 x 2 1/4" 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 the most demanding heavy-duty applications.
• Superior corrosion resistance provided by the black phosphate coating, extending service life in harsh industrial environments.
• High-strength Grade 8 classification and Rockwell C32 hardness offer excellent durability and resistance to wear and deformation.
• Precise Class 3A thread fit with UNC coarse threading ensures secure, vibration-resistant connections and easier assembly.
• Integrated flange design eliminates the need for a separate washer, providing a larger bearing surface and faster installation.
• Full threading along the entire 2 1/4" length allows for maximum adjustability and grip in various material thicknesses.
• Compliance with IFI 111/SAE J429 specifications guarantees consistent quality and interoperability in professional applications.

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, this Grade 8 hex head screw delivers critical performance where failure is not an option. The black phosphate steel construction provides a robust barrier against rust and corrosion, making it ideal for outdoor machinery, construction equipment, and automotive assemblies exposed to moisture and chemicals. Its UNC coarse thread and Class 3A thread fit ensure rapid installation with high resistance to loosening under dynamic loads and vibration, reducing maintenance downtime. The external hex drive and flanged head offer superior torque transmission and clamping force, distributing load effectively to prevent surface damage. This screw is a trusted solution for structural connections, heavy machinery frames, and high-stress environments requiring 150,000 psi tensile strength and long-term reliability.

Specification Summary & Compliance

This fastener adheres to stringent manufacturing standards, including IFI 111 SAE J429, ensuring consistent quality and performance. The UNC 3/4"-10 coarse thread is manufactured to Class 3A fit for precise dimensional accuracy and superior thread engagement. The Grade 8 classification confirms high mechanical properties, including a tensile strength of 150,000 psi and a hardness of Rockwell C32. The product is compliant with industry regulations such as RoHS and REACH, guaranteeing environmental safety and material integrity for global industrial use.