S-90393A122 3/8"-16 x 1" IFI 111, SAE J429 Medium-Strength Grade 5 Steel Serrated-Flange Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 120,000 psi tensile strength for reliable performance in high-stress applications
• Enhanced durability and wear resistance thanks to Rockwell C22 hardness, extending service life in demanding environments
• Secure anti-loosening performance provided by serrated locking flange design, maintaining joint integrity under vibration
• Quick installation and removal with external hex drive and 9/16" head width for standard tool compatibility
• Superior thread engagement through UNC coarse threading and Class 2A fit, ensuring consistent fastening accuracy
• Full-length thread coverage across the 1" length for maximum grip strength and adjustment flexibility
• Regulatory compliance assurance meeting SAE J429 standards and environmental regulations for global industrial use

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these Grade 5 hex head screws deliver critical performance where vibration resistance and structural integrity are paramount. The flanged design with serrations eliminates the need for separate washers while providing superior anti-rotation properties in machinery, automotive assemblies, and heavy equipment. The UNC coarse thread pattern ensures rapid installation and reliable performance in materials where fine threads might strip or fail. With fully threaded construction and external hex drive, these fasteners offer maximum clamping force distribution and compatibility with standard industrial tools. The combination of 120,000 psi tensile strength and Rockwell C22 hardness makes them ideal for structural connections, frame assemblies, and equipment mounting where consistent performance under load is essential.

Specification Summary & Compliance

These 3/8"-16 hex head screws feature Class 2A thread fit per UNC standards, ensuring precise dimensional accuracy and interchangeability. Manufacturing complies with IFI 111 specifications where identified as SAE J429 for Grade 5 mechanical properties. The fasteners are RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting current environmental regulations for industrial components. Additional specifications include right-hand thread direction, 13/16" flange diameter, and full threading across the 1" length.