S-90166A113 1/4"-20 x 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
- Exceptional corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments
- High tensile strength of 70,000 psi ensures reliable performance under heavy loads and vibration
- Rockwell B80 hardness provides superior durability and resistance to wear and deformation
- Integrated flange design eliminates the need for a separate washer, distributing load evenly and speeding up assembly
- External hex drive with 3/8" head width allows for high-torque installation using standard tools
- Fully threaded UNC coarse spacing ensures rapid installation and strong holding power in a variety of materials
- Class 2A thread fit offers consistent, reliable engagement while accommodating minor variations in mating parts
Professional Applications & Engineering Value
Engineered for demanding industrial applications, this 18-8 Stainless Steel hex head flange screw combines material integrity with precision manufacturing to solve common assembly challenges. The flange design provides a larger bearing surface, reducing surface pressure and preventing loosening under dynamic loads—ideal for machinery, automotive subassemblies, and structural frameworks. Its UNC coarse thread and fully threaded construction enable quick installation in both metallic and non-metallic materials, while the external hex drive facilitates high-torque tightening with standard wrenches. The corrosion-resistant properties of 18-8 stainless steel ensure long-term reliability in humid or chemically aggressive environments, minimizing maintenance and replacement costs.
Specification Summary & Compliance
This screw features a 1/4"-20 UNC thread with Class 2A fit, ensuring dimensional accuracy and interchangeability. It is manufactured in accordance with ASTM F593 specifications for consistency and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in regulated industries and global markets.
