S-97646A120 1/4"-20 x 1 1/4" 18-8 Stainless Steel Serrated-Flange Hex Head Screws
18-8 Stainless Steel Serrated-Flange 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 or humid environments.
- Superior load distribution thanks to the integrated flange, reducing surface pressure and preventing loosening.
- High tensile strength of 100,000 psi ensures reliable performance under heavy mechanical stress.
- Easy and secure installation with an external hex drive and coarse UNC threads for quick assembly.
- Precise and reliable thread fit with Class 2A tolerance, providing consistent engagement and vibration resistance.
- Full threading along the 1-1/4" length offers maximum grip and adjustability in various material thicknesses.
- Compliance with RoHS 3 and REACH regulations guarantees safety and environmental responsibility for industrial use.
Professional Applications & Engineering Value
This 18-8 stainless steel hex head screw is engineered to address common industrial challenges such as vibration-induced loosening and corrosion in demanding settings. The integrated flange acts as a built-in washer, distributing clamp load over a wider area to protect soft materials and maintain joint integrity. Its UNC coarse threads and external hex drive allow for rapid installation with standard tools, reducing assembly time in production lines or maintenance. With a high tensile strength and Rockwell B100 hardness, it withstands heavy loads and repetitive stress in machinery, automotive, and construction applications, ensuring long-term reliability without frequent replacements.
Specification Summary & Compliance
This screw features a 1/4"-20 UNC coarse thread with a Class 2A thread fit for precise dimensional accuracy and easy assembly. It is fully threaded, measures 1-1/4" in length, and includes a flange with a 9/16" diameter. Manufactured from 18-8 stainless steel, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial standards.
