S-92323A556 3/8"-16 x 1 1/4" 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 provides reliable performance in demanding applications, reducing the risk of fastener failure.
• Zinc-plated steel construction offers excellent corrosion resistance, extending the service life of the fastener in various industrial environments.
• Serrated locking flange ensures a secure, vibration-resistant hold, minimizing the need for re-tightening and maintaining joint integrity.
• Coarse UNC threading (Class 2A fit) allows for faster installation and easier alignment, saving valuable assembly time.
• External hex drive and hex head design facilitate high-torque application with standard tools, ensuring efficient and straightforward installation.
• Grade 5 classification and SAE J429 compliance guarantee consistent quality and mechanical properties, providing peace of mind for critical assemblies.
• Full threading along the 1 1/4" length offers versatile fastening depth and uniform clamping force across the entire engagement.

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 serrated locking flange bites into the mounting surface, providing a prevailing torque that resists back-off in high-vibration environments like machinery, automotive frames, and structural supports. The coarse UNC thread ensures quick and reliable engagement, even in materials where fine threads might be prone to stripping. Made from zinc-plated steel, it offers a durable, cost-effective solution for applications requiring 110,000 psi tensile strength and consistent performance under load. Its external hex drive allows for high clamping forces, making it ideal for heavy-duty fastening where reliability is paramount.

Specification Summary & Compliance

This fastener features a 3/8"-16 UNC coarse thread with a Class 2A fit for standard tolerance and ease of assembly. It is manufactured to meet IFI 111 SAE J429, ensuring adherence to recognized mechanical and dimensional standards. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in environments with strict environmental and safety requirements.