S-92323A510 1/4"-20 x 3/8" IFI 111, SAE J429 Medium-Strength Grade 5 Steel Serrated-Flange Hex Head Screws

Key Features & Benefits at a Glance

• Enhanced durability and corrosion resistance with zinc-plated steel construction, ideal for demanding industrial environments.
• Superior load-bearing capacity thanks to Grade 5 strength rating and 110,000 psi tensile strength, ensuring reliable performance under high stress.
• Secure, vibration-resistant fastening provided by serrated locking flange, minimizing loosening in dynamic applications.
• Efficient installation and removal with external hex drive and hex head design, allowing for easy tool access and high torque application.
• Precise thread engagement with UNC coarse thread and Class 2A fit, facilitating quick assembly and reducing cross-threading risks.
• Versatile full-thread design enabling consistent grip along the entire 3/8" length, suitable for various material thicknesses.
• Compliance with industry standards including SAE J429, RoHS 3, and REACH, ensuring safety and regulatory adherence for global supply chains.

Professional Applications & Engineering Value

This Grade 5 zinc-plated steel hex head screw is engineered to address critical challenges in heavy-duty industrial settings, such as machinery assembly, automotive components, and structural frameworks. The UNC coarse thread and Class 2A thread fit provide excellent engagement in metals and plastics, reducing installation time while maintaining integrity. The flange with serrations acts as a built-in lock washer, distributing clamp load and resisting vibration-induced loosening—common in equipment subjected to constant motion. With a tensile strength of 110,000 psi and Rockwell C22 hardness, it withstands high-stress conditions without deformation. The zinc plating offers a protective barrier against corrosion, extending service life in harsh environments. Ideal for applications requiring reliable, reusable fasteners, this screw combines external hex drive convenience with robust performance, ensuring long-term operational safety and efficiency.

Specification Summary & Compliance

This fastener adheres to precise dimensional standards, including UNC coarse threads with Class 2A thread fit for consistent accuracy. It meets SAE J429 specifications for Grade 5 mechanical properties, ensuring reliable strength and hardness. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it is free from hazardous substances, supporting safe and sustainable industrial use.