S-92323A553 3/8"-16 x 7/8" IFI 111, SAE J429 Medium-Strength Grade 5 Steel Serrated-Flange Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 110,000 PSI (Grade 5) ensures reliable performance in demanding industrial applications, reducing the risk of fastener failure.
• Zinc-plated steel construction provides superior corrosion resistance, extending service life in harsh or outdoor environments.
• Flange design with serrations eliminates the need for a separate washer, distributes load evenly, and prevents loosening under vibration.
• Fully threaded UNC coarse thread with Class 2A fit allows for faster installation and easier alignment in a wide range of materials.
• External hex drive and hex head offer high torque capability and secure tool engagement, speeding up assembly and disassembly.
• Rockwell C22 hardness provides excellent durability and wear resistance, maintaining thread integrity through repeated use.
• Compliance with SAE J429, RoHS 3, and REACH ensures the screw meets rigorous industry and environmental standards for safe, global use.

Professional Applications & Engineering Value

This Grade 5 zinc-plated steel hex head screw is engineered to address common challenges in industrial assembly, such as vibration-induced loosening and corrosion. The flange with serrations acts as an integrated locking mechanism, enhancing joint security in machinery, automotive frames, and structural steelwork without extra components. Its UNC coarse threading and Class 2A thread fit ensure quick, precise fastening in coarse-grained materials, reducing installation time and labor costs. The zinc plating offers a protective barrier against moisture and chemicals, ideal for outdoor equipment or manufacturing plants. With a tensile strength of 110,000 PSI, it supports heavy-duty applications where reliability is critical, minimizing downtime and maintenance.

Specification Summary & Compliance

This screw features a 3/8"-16 UNC coarse thread with Class 2A thread fit for standard dimensional accuracy, ensuring compatibility with common nuts and tapped holes. It is manufactured to meet IFI 111 specifications under SAE J429 for Grade 5 fasteners, confirming consistent strength and quality. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it adheres to environmental safety standards, making it suitable for global industrial supply chains.