S-92316A851 3/4"-10 x 4" IFI 111, SAE J429 High-Strength Grade 8 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional Tensile Strength – With 150,000 psi tensile strength and Rockwell C32 hardness, this screw withstands extreme loads in heavy-duty applications, reducing the risk of fastener failure.
• Superior Corrosion Resistance – The black-phosphate steel coating provides enhanced protection against rust and environmental wear, extending service life in harsh industrial or outdoor settings.
• Reliable Thread Engagement – UNC coarse threads and Class 2A thread fit ensure easy installation and secure fastening, minimizing cross-threading and improving assembly efficiency.
• Integrated Flange Design – The flanged head distributes clamping force evenly, eliminating the need for separate washers and speeding up installation in construction or machinery assemblies.
• Partial Threading for Precision – Partially threaded shank allows for precise grip length control, ideal for applications where unthreaded sections prevent material damage or misalignment.
• Heavy-Duty Grade Compliance – Meets Grade 8 standards (SAE J429) for high-stress environments, ensuring consistent performance in demanding mechanical and structural uses.
• Environmental & Safety Compliance – RoHS 3 and REACH compliant, making it safe for regulated industries and reducing environmental impact without sacrificing durability.

Professional Applications & Engineering Value

Engineered for rigorous industrial and construction tasks, this Grade 8 hex head screw combines black-phosphate steel with a flanged design to address common challenges like vibration loosening and corrosion. The UNC coarse thread and Class 2A fit facilitate quick, reliable installations in heavy machinery, structural frameworks, and equipment assemblies, where high tensile strength (150,000 psi) is critical. Its partial threading ensures optimal load distribution, preventing joint failure in dynamic applications. By integrating corrosion resistance with SAE J429 compliance, it reduces maintenance needs and enhances longevity in sectors such as manufacturing, automotive, and infrastructure projects.

Specification Summary & Compliance

This screw adheres to precise dimensional standards, including Class 2A thread fit and UNC coarse threading (3/4"-10 size), ensuring compatibility with inch-system components. Manufactured under IFI 111 specifications meeting SAE J429 for Grade 8 fasteners, it guarantees consistent strength and reliability. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) confirms its suitability for environmentally conscious and regulated industrial applications, providing assurance of safety and performance.