S-92921A009 0.21" ID x 0.531" OD Finishing Washers

Key Features & Benefits at a Glance

• Perfect flush mounting with precise 82° countersink angle for seamless integration with No. 8 screws
• Superior corrosion resistance provided by high-quality brass material for extended service life in harsh environments
• Precision dimensional accuracy with 0.531" OD and 0.21" ID ensuring perfect fit and consistent performance
• Environmental compliance assurance with RoHS 3 and REACH compliance for global market acceptance
• Reliable load distribution through optimal sizing that prevents surface damage and maintains joint integrity
• Durable brass construction offering excellent electrical conductivity and non-magnetic properties for specialized applications

Professional Applications & Engineering Value

These 82° countersunk brass washers deliver exceptional engineering value by solving critical flush-mounting challenges in precision assemblies. The brass material provides inherent corrosion resistance that outperforms standard steel alternatives in marine, electrical, and plumbing applications where moisture exposure is common. The precisely engineered countersink angle ensures screw heads sit perfectly flush, eliminating protrusions that could interfere with moving parts or create safety hazards. Specifically designed for No. 8 screws in the inch measurement system, these washers maintain dimensional stability under vibration and thermal cycling, making them ideal for electrical enclosures, instrumentation panels, and precision machinery where reliable fastening is critical. The combination of material properties and geometric precision addresses common industrial pain points including galvanic corrosion, installation inconsistencies, and maintenance accessibility.

Specification Summary & Compliance

This countersunk washer features precise inch system dimensions with 0.531" outer diameter, 0.21" inner diameter, and 0.13" overall height, engineered specifically for No. 8 screw applications. The 82° countersink angle conforms to standard flush-mounting requirements. Manufactured from high-quality brass, these washers comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring they meet the latest international compliance standards for hazardous substance restrictions.