S-90313A105 0.219" ID x 1.25" OD Oversized Washers
Oversized Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance from 18-8 stainless steel, ensuring long-term reliability in harsh or humid environments.
- Precise dimensional fit with a 0.219" inner diameter, designed specifically for secure seating on No. 10 screws.
- Optimal load distribution thanks to the 1.25" outer diameter, reducing surface pressure and preventing material damage.
- Consistent thickness range (0.043"–0.057") for uniform performance and ease of assembly in repetitive applications.
- Full RoHS 3 and REACH compliance, meeting strict environmental regulations for safe use in global industrial markets.
- Durable stainless steel construction that resists rust and tarnish, minimizing maintenance and replacement costs.
- Ideal for inch-system assemblies, ensuring compatibility with standard U.S. hardware and reducing sourcing complexity.
Professional Applications & Engineering Value
This 18-8 stainless steel flat washer is engineered to address common industrial challenges such as fastener loosening, surface abrasion, and corrosion-induced failure. Its corrosion-resistant properties make it suitable for demanding environments like outdoor machinery, chemical processing, and marine equipment, where exposure to moisture and chemicals is frequent. The precise 0.219" ID ensures a snug fit on No. 10 screws, preventing misalignment and enhancing joint integrity. With a 1.25" OD, it effectively distributes clamping force, protecting soft materials and reducing stress concentrations. As a RoHS and REACH compliant component, it supports sustainable manufacturing practices while delivering reliable performance in assembly lines, automotive systems, and structural frameworks.
Specification Summary & Compliance
This flat washer adheres to standard inch-system dimensions with an inner diameter of 0.219", outer diameter of 1.25", and thickness ranging from 0.043" to 0.057". It is manufactured from 18-8 stainless steel for consistent quality and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance in industrial applications.
