S-90089A300 0.156" ID x 0.312" OD Plastic Washers

Key Features & Benefits at a Glance

• Superior electrical insulation prevents current leakage and short circuits in sensitive assemblies
• Excellent corrosion resistance maintains integrity in humid or chemically exposed environments
• Precise dimensional fit with 0.156" ID ensures secure seating on No. 6 screws without slippage
• Durable hard fiber construction provides reliable sealing and vibration damping under compression
• High-temperature tolerance up to 230°F withstands thermal cycling in demanding applications
• Regulatory compliance with RoHS 3 and REACH ensures environmental safety and global market acceptance
• Non-conductive properties eliminate electrical interference risks in multi-component systems

Professional Applications & Engineering Value

This hard fiber flat washer delivers critical electrical insulation and mechanical protection in industrial settings where conductivity risks must be eliminated. The gray hard fiber material provides consistent performance as a non-conductive sealing solution in electrical enclosures, control panels, and instrumentation assemblies. Its precise 0.156" ID x 0.312" OD dimensions ensure perfect alignment with No. 6 screws, preventing galvanic corrosion between dissimilar metals while maintaining seal integrity under compression. The washer's temperature resistance up to 230°F makes it ideal for automotive, appliance, and industrial equipment applications where thermal stability is essential for long-term reliability.

Specification Summary & Compliance

Manufactured to inch system standards with precise internal diameter (0.156"), outer diameter (0.312"), and thickness (0.014-0.016") tolerances. This flat washer complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring restriction of hazardous substances. The hard fiber construction provides consistent performance across the specified temperature range while maintaining dimensional stability under compression loads.