S-90333A009 0.21" ID x 0.609" OD Finishing Washers

Key Features & Benefits at a Glance

• Perfect flush mounting with an 82° countersink angle for seamless integration with flat-head screws, eliminating protrusions and improving aesthetics.
• Enhanced load distribution from the flanged design, reducing surface pressure and preventing material damage in your assemblies.
• Superior corrosion resistance provided by 18-8 Stainless Steel, ensuring long-term reliability in harsh or humid environments.
• Precision dimensional fit with 0.609" OD and 0.21" ID, engineered for exact compatibility with No. 8 screws to prevent misalignment.
• Robust industrial durability thanks to the stainless steel construction, capable of withstanding repeated stress in demanding applications.
• Compliance with global standards including RoHS 3 and REACH, guaranteeing safe, environmentally responsible components for international supply chains.
• Wide application versatility in inch-system projects, from machinery to structural assemblies, due to standardized sizing and reliable performance.

Professional Applications & Engineering Value

Engineered for precision, this 82° countersunk flanged washer addresses common industrial challenges like surface damage and insecure fastening. The 18-8 stainless steel material offers excellent resistance to rust and chemical exposure, making it ideal for outdoor equipment, marine hardware, and food processing machinery where hygiene and durability are critical. Its flanged design significantly increases the bearing area, distributing clamp load evenly to prevent loosening under vibration—common in automotive or aerospace assemblies. By ensuring a flush fit with No. 8 screws, it eliminates snag points and streamlines profiles in consumer electronics or furniture. This washer simplifies installation while enhancing structural integrity, reducing maintenance needs and lifecycle costs in industrial washers applications.

Specification Summary & Compliance

This washer features precise inch-dimensioning with an OD of 0.609", ID of 0.21", and overall height of 0.125", designed to meet standard fit requirements for No. 8 screw fastening. It adheres to common industrial specifications for countersunk washers with an 82° angle, ensuring compatibility with standard flat-head screws. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted substances and supporting use in regulated markets. Manufactured from 18-8 stainless steel, it provides consistent performance without additional hardness ratings, suitable for general-purpose and corrosion-resistant washers applications.