S-90166A127 3/8"-16 x 1" 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 industrial environments and extended service life.
• High tensile strength of 70,000 psi ensures reliable performance under heavy loads and vibration, reducing failure risks.
• Class 2A thread fit with UNC coarse threading provides easy installation and secure fastening in various materials.
• Flanged head design eliminates the need for separate washers, saving assembly time and improving load distribution.
• Fully threaded shank offers maximum grip length and uniform clamping force across the entire fastener.
• External hex drive allows for high-torque application with standard tools, enhancing installation efficiency.
• Compliance with ASTM F593, RoHS 3, and REACH ensures material consistency, environmental safety, and regulatory acceptance.

Professional Applications & Engineering Value

This 3/8"-16 UNC hex head screw in 18-8 stainless steel addresses critical industrial challenges, such as corrosion in marine, chemical, or outdoor settings. The coarse thread spacing and Class 2A thread fit facilitate quick assembly in metals and plastics, minimizing cross-threading risks. Its flanged construction distributes stress evenly, preventing surface damage and loosening under dynamic loads. With a Rockwell B80 hardness and 70,000 psi tensile strength, it withstands high-stress applications in machinery, construction, and automotive systems, ensuring long-term reliability and reduced maintenance costs.

Specification Summary & Compliance

This screw features precise Class 2A thread fit per UNC standards, with a 3/8"-16 thread size and coarse thread spacing. It conforms to ASTM F593 specifications for material and mechanical properties, and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and industry acceptance.