S-90166A131 3/8"-16 x 1 3/4" ASTM F593, IFI 111 Stainless Steel Flanged Hex Head Screws
Stainless Steel Flanged Hex Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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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, heavy-duty fastening for demanding industrial applications
- Integrated flange design eliminates the need for a separate washer, speeding up assembly and providing a larger bearing surface
- Class 2A thread fit offers excellent interchangeability and ease of installation while maintaining secure engagement
- Coarse UNC threading provides faster installation and reduced risk of cross-threading in various materials
- External hex drive allows for high-torque application with standard tools, ensuring tight and secure connections
- Partial threading offers unthreaded shank for precise clamping and shear strength in structural assemblies
Professional Applications & Engineering Value
This 3/8"-16 UNC flanged hex head screw is engineered to address common industrial challenges such as vibration loosening, corrosion-induced failure, and assembly inefficiency. The 18-8 Stainless Steel material provides exceptional resistance to rust and chemical exposure, making it suitable for outdoor, marine, and chemical processing equipment. The flanged head distributes clamp load over a wider area, preventing surface damage and maintaining joint integrity under dynamic loads. With its coarse thread spacing and Class 2A thread fit, it ensures quick, reliable installation in construction, machinery, and transportation applications where durability and compliance are critical.
Specification Summary & Compliance
This screw features a Class 2A thread fit per UNC standards, ensuring dimensional accuracy and interchangeability. It is manufactured in compliance with ASTM F593 specifications for consistent quality and performance. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for use in various global markets.
