S-90089A305 0.188" ID x 0.375" OD Plastic Washers

Key Features & Benefits at a Glance

• Superior electrical insulation properties from hard fiber material prevents current leakage and short circuits in electrical assemblies
• Excellent corrosion resistance makes these washers ideal for humid or chemically aggressive environments where metal washers would degrade
• Precision dimensional control with 0.014-0.016" thickness ensures consistent compression and reliable sealing performance
• High-temperature resilience up to 230°F maintains structural integrity in demanding thermal applications
• Perfect No. 8 screw compatibility with 0.188" ID provides secure fit and optimal load distribution
• Environmental compliance assurance with RoHS 3 and REACH certification meets stringent international regulatory standards
• Non-conductive and non-magnetic properties eliminate interference in sensitive electronic equipment

Professional Applications & Engineering Value

These hard fiber flat washers deliver critical engineering solutions where electrical insulation and chemical resistance are paramount. The gray hard fiber construction provides exceptional dielectric strength while resisting moisture, oils, and solvents that typically degrade metallic alternatives. Engineered for No. 8 screw applications, these washers maintain dimensional stability across the specified 0.014-0.016" thickness range, ensuring consistent clamping force in electrical panels, control systems, and outdoor equipment. The material's natural lubricity prevents galling and reduces assembly torque requirements, while the 230°F temperature rating makes them suitable for motor mounts, transformer installations, and industrial machinery where thermal cycling occurs.

Specification Summary & Compliance

This flat washer features precise inch dimensions with 0.188" inner diameter, 0.375" outer diameter, and controlled thickness between 0.014-0.016". Manufactured from hard fiber material specifically engineered for No. 8 screw size applications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and restricted substance adherence. Temperature rating certified to 230°F maximum operating conditions.