S-90089A350 0.5" ID x 0.688" OD Plastic Washers

Key Features & Benefits at a Glance

• Excellent electrical insulation properties due to non-conductive hard fiber construction, preventing current leakage in sensitive equipment
• Superior vibration dampening and load distribution across the 0.688" outer diameter surface, protecting components from loosening and surface damage
• Reliable performance in moderate heat environments withstanding temperatures up to 230°F without compromising material integrity
• Precise 0.5" inner diameter fit ensures secure seating on 1/2" screws without slippage or misalignment during assembly
• Consistent 0.014-0.016" thickness provides uniform pressure distribution and reliable sealing capabilities
• Full regulatory compliance with RoHS 3 and REACH standards, making them suitable for regulated industries and international supply chains
• Corrosion-resistant non-metallic material eliminates galvanic corrosion risks when used with dissimilar metals

Professional Applications & Engineering Value

This hard fiber flat washer delivers critical engineering solutions where electrical isolation and thermal resistance are paramount. The gray hard fiber material provides exceptional non-conductive properties, making it ideal for electrical assemblies, control panels, and electronic enclosures where current isolation prevents short circuits and equipment failure. The precise 0.5" ID ensures perfect alignment with 1/2" screws, while the controlled 0.014-0.016" thickness maintains consistent compression across mating surfaces. These industrial washers effectively dampen vibration in mechanical systems, distribute loads evenly to prevent surface deformation, and maintain performance in applications reaching 230°F maximum temperature. Their non-metallic construction eliminates galvanic corrosion concerns when used with steel fasteners in humid or corrosive environments.

Specification Summary & Compliance

This flat washer features precise inch system dimensions with 0.5" inner diameter, 0.688" outer diameter, and controlled thickness between 0.014-0.016". Manufactured from hard fiber material in gray color, it's engineered specifically for 1/2" screw applications. The product fully complies with RoHS 3 (2015/863/EU) regulations and REACH (EC 1907/2006) standards regarding substance restrictions, ensuring environmental and safety compliance for industrial applications worldwide.