S-90295A420 0.193" ID x 0.438" OD Plastic Washers
Plastic Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Temperature & Environment Parameters
Installation & Application Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Excellent chemical resistance for reliable performance in harsh industrial environments
- Superior electrical insulation properties to prevent current leakage and short circuits
- Wide temperature tolerance from -40°F to 180°F for stable operation in extreme conditions
- Rockwell R115 hardness provides optimal durability and load distribution
- Precise dimensional accuracy with 0.193" ID and 0.438" OD ensures perfect fit for No. 10 screws
- Full regulatory compliance with RoHS 3 and REACH standards for safe, sustainable use
- Nylon material advantages including corrosion resistance and reduced maintenance requirements
Professional Applications & Engineering Value
This nylon plastic flat washer delivers exceptional engineering value across multiple industrial sectors. The Rockwell R115 hardness ensures reliable performance under compression while maintaining dimensional stability. As a chemical resistant washer, it prevents degradation from oils, solvents, and other industrial fluids, making it ideal for automotive, electrical, and manufacturing applications. The electrical insulation properties are particularly valuable in electrical assemblies and electronic enclosures where current isolation is critical. With its temperature resistant capabilities from -40°F to 180°F, this No. 10 screw washer maintains integrity in both freezing and elevated temperature environments, solving common failure points in outdoor and high-heat applications.
Specification Summary & Compliance
This flat washer features precise inch system dimensions with 0.193" inner diameter and 0.438" outer diameter, designed specifically for No. 10 screw applications. The thickness range of 0.026-0.036" ensures consistent performance across manufacturing tolerances. Manufactured from high-grade nylon plastic, the washer complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for industrial applications requiring environmental and safety compliance. The combination of material properties and dimensional accuracy makes this washer an optimal choice for engineers seeking reliable fastening solutions.
