S-90166A129 3/8"-16 x 1 1/2" ASTM F593, IFI 111 Stainless Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and outdoor applications
• Exceptional tensile strength rated at 70,000 psi ensures reliable performance under heavy loads and vibration
• Integrated flange design eliminates the need for separate washers, providing wider bearing surface and faster installation
• Coarse UNC threading offers quicker assembly and reduced cross-threading risk in industrial applications
• Precision Class 2A thread fit guarantees consistent engagement and reliable fastening performance
• External hex drive compatibility with standard tools enables high-torque installation and removal
• Full threading along the entire 1-1/2" length provides maximum adjustment flexibility and grip strength

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these flanged hex head screws combine the corrosion resistance of 18-8 stainless steel with the mechanical strength needed for structural assemblies. The integrated 13/16" flange diameter distributes clamping force effectively, preventing surface damage and maintaining joint integrity in machinery, construction, and transportation equipment. The coarse UNC thread pattern ensures reliable performance in materials where fine threads might strip or fail, while the Rockwell B80 hardness provides excellent wear resistance. These characteristics make them particularly valuable in applications requiring repeated disassembly and reassembly, where corrosion-resistant fasteners must maintain their mechanical properties through multiple service cycles.

Specification Summary & Compliance

This 3/8"-16 UNC threaded hex head screw features Class 2A thread fit tolerances for consistent engagement and meets ASTM F593 manufacturing specifications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors. With complete threading along the 1-1/2" length and standardized external hex drive compatibility, these screws deliver reliable performance in accordance with industrial fastening standards.