S-90166A114 1/4"-20 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 environments and long-term reliability.
• Exceptional tensile strength of 70,000 psi ensures secure, heavy-duty fastening without failure under high stress.
• Integrated flange design eliminates the need for a separate washer, providing wider load distribution and simplified assembly.
• Full threading along the 1" length offers maximum grip and adjustability in various material thicknesses.
• Coarse UNC thread with Class 2A fit enables quick installation and reliable performance in a wide range of industrial applications.
• External hex drive and hex head allow for high-torque application using standard tools, reducing assembly time.
• Compliance with ASTM F593, RoHS 3, and REACH guarantees material consistency, environmental safety, and global regulatory acceptance.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, this 18-8 stainless steel flanged hex head screw addresses common challenges like corrosion, vibration loosening, and assembly efficiency. The flanged design distributes clamping force over a broader area, reducing surface damage and preventing pull-through in soft materials. With a coarse UNC thread and Class 2A fit, it ensures rapid installation and reliable hold in metals, plastics, and wood, making it ideal for machinery, automotive, and construction applications. The fully threaded 1" length and external hex drive provide versatility and ease of use with standard wrenches, streamlining maintenance and production processes while maintaining high tensile strength and durability.

Specification Summary & Compliance

This screw adheres to precise dimensional standards, including UNC thread with Class 2A fit for consistent engagement and coarse thread spacing for efficient fastening. It is manufactured in compliance with ASTM F593 for material and mechanical properties, ensuring reliability in structural applications. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of hazardous substances and suitable for global supply chains.