S-90089A410 0.875" ID x 1.188" 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 electrical insulation properties from hard fiber material, preventing current leakage in electrical assemblies
- Reliable sealing and vibration dampening for mechanical joints, reducing noise and component wear
- High-temperature resistance up to 230°F ensures stable performance in warm operating environments
- Precise dimensional fit with 0.875" ID and 1.188" OD for accurate alignment with 7/8" screws
- Consistent thickness control (0.014-0.016") provides uniform load distribution and fastener stability
- Full regulatory compliance with RoHS 3 and REACH standards for safe use in global industrial markets
- Durable gray hard fiber construction offers long service life without corrosion in various applications
Professional Applications & Engineering Value
These hard fiber flat washers deliver critical engineering solutions where electrical insulation, thermal stability, and chemical resistance are paramount. The gray hard fiber material inherently resists electrical conductivity, making these industrial washers ideal for electrical enclosures, control panels, and machinery where short-circuit prevention is essential. With a 230°F maximum temperature rating, they maintain integrity in heated equipment and engine compartments. The precise 0.875" ID ensures snug fit on 7/8" screws while the 1.188" OD provides sufficient bearing surface. This combination addresses common industrial pain points including vibration loosening, galvanic corrosion between dissimilar metals, and electrical isolation requirements in inch-system assemblies.
Specification Summary & Compliance
This flat washer maintains inch-system dimensional precision with internal diameter of 0.875", outer diameter of 1.188", and controlled thickness range of 0.014-0.016". Manufactured from hard fiber material for consistent performance in industrial applications. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to international environmental and safety standards for hazardous substance restrictions.
