S-90166A134 3/8"-16 x 3" 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 reducing maintenance costs.
• High tensile strength of 70,000 psi ensures reliable performance under heavy loads and vibration.
• Integrated flange design eliminates the need for a separate washer, providing a larger bearing surface for improved load distribution.
• Coarse UNC thread and Class 2A fit offer faster assembly and reliable engagement in a wide range of materials.
• External hex drive and hex head allow for high-torque installation with standard tools, speeding up assembly.
• Partial threading provides an unthreaded shank for precise clamping where shear strength is critical.
• Full compliance with industry standards including ASTM F593, RoHS 3, and REACH, ensuring material quality and environmental safety.

Professional Applications & Engineering Value

This 3/8"-16 UNC hex head screw is engineered to solve common industrial fastening challenges. The 18-8 Stainless Steel material provides excellent resistance to rust and corrosion, making it suitable for outdoor equipment, marine applications, and chemical processing plants where environmental factors degrade lesser fasteners. The flanged design increases stability and prevents pull-through in sheet metal or plastic assemblies, while the coarse thread ensures secure fastening in soft materials or where vibration loosening is a concern. Its partial threading offers a strong, unthreaded grip length, ideal for structural connections requiring high shear strength. This combination of corrosion resistance, high tensile strength, and efficient design delivers long-term reliability, reducing downtime and replacement costs in demanding industrial applications.

Specification Summary & Compliance

This screw features a 3/8"-16 UNC coarse thread with a Class 2A thread fit for standard tolerance and easy assembly. It is manufactured in compliance with ASTM F593 specifications for stainless steel bolts, ensuring consistent quality and performance. The product is also RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming it is free from hazardous substances and meets stringent environmental regulations for industrial use.