S-90377A206 0.625" ID x 1.375" 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 with black-oxide coating on 18-8 stainless steel, ideal for harsh industrial environments
- Precise dimensional fit with 0.625" inner diameter and 1.375" outer diameter for reliable 9/16" screw applications
- Enhanced load distribution due to consistent 0.110-0.140" thickness, reducing surface stress and fastener loosening
- Long-lasting durability from 18-8 stainless steel construction, maintaining performance under mechanical stress
- Environmental compliance with RoHS 3 and REACH standards, ensuring safe use in regulated industries
- Broad compatibility with inch-system fasteners, simplifying procurement for North American industrial projects
Professional Applications & Engineering Value
These black-oxide 18-8 stainless steel flat washers address critical engineering challenges in corrosive or high-moisture settings, such as marine equipment, chemical processing plants, and outdoor infrastructure. The black-oxide surface treatment enhances the natural corrosion resistance of 18-8 stainless steel, preventing rust and extending service life without sacrificing electrical conductivity. With precise 0.625" ID and 1.375" OD dimensions, they ensure uniform pressure distribution for 9/16" screw sizes, minimizing wear on assembled components. This makes them invaluable for industrial washers applications requiring reliable sealing against environmental factors and vibration, while the inch-system design streamlines integration into existing North American machinery and maintenance protocols.
Specification Summary & Compliance
This flat washer meets standard inch-system dimensional tolerances with inner diameter of 0.625", outer diameter of 1.375", and thickness range of 0.110-0.140". Manufactured from 18-8 stainless steel with black-oxide finish, it is engineered for 9/16" screw size compatibility. The product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and safety standards for industrial components.
