Aircraft Countersunk Washers
Zinc Plated & Stainless Steel Aviation Washers | EU Stock
Your European Source for Aircraft Countersunk Washers
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Airpart Supply is your trusted European distributor for high-quality aircraft countersunk washers, stocked in our Dublin warehouse for fast delivery across the EU. Countersunk washers are essential aircraft hardware components designed to provide a flush mounting surface when used with countersunk (flat head) screws. These precision-engineered washers distribute load evenly while maintaining the aerodynamic profile of aircraft surfaces - critical for airframe integrity and performance. Our countersunk washer range includes both zinc plated options for general applications and stainless steel variants for corrosion-critical environments. All washers meet stringent aviation specifications and are suitable for use in Cessna, Piper, Beechcraft, and other general aviation aircraft. Whether you need washers for panel installations, inspection covers, or structural applications, our EU warehouse stocks a comprehensive range ready for immediate dispatch to European customers. |
Understanding Countersunk Washer Dimensions
When selecting countersunk washers for your aircraft application, three critical dimensions must be considered:
Outside Diameter (O.D.)The overall diameter of the washer. Must be sized appropriately for the screw head and application requirements. |
Inside Diameter (I.D.)The hole size through the centre. Must match the screw shank diameter for proper fit and load distribution. |
ThicknessThe material thickness of the washer. Critical for achieving proper countersink depth and flush mounting. |
Countersunk Washers Catalogue
Zinc Plated & Stainless Steel Countersunk Washers
| Size | O.D. | I.D. | Thickness | Zinc Plated Part Number |
Stainless Steel Part Number |
|---|---|---|---|---|---|
| #6 | .50" | .140" | .012" | A3236-012-193 | - |
| #8 | .56" | .171" | .017" | A3135-017-193 | - |
| #10 | .75" | .196" | .020" | A3235-020-193 | A3235SS020-27 |
| #10 | .75" | .196" | .028" | A3235-028-193 | - |
Note: Click part numbers to view pricing and availability. Additional sizes may be available on request - contact our team for special requirements.
Zinc Plated vs Stainless Steel: Which to Choose?
Zinc Plated WashersBest for: Interior applications, moderate environments, cost-effective solutions Advantages: Lower cost, good corrosion resistance for most applications, widely available Applications: Interior panels, avionics mounting, cabin fixtures, inspection covers |
Stainless Steel WashersBest for: Exterior applications, marine environments, high-corrosion areas Advantages: Superior corrosion resistance, longer service life, no plating to wear off Applications: Exterior panels, coastal/marine aircraft, engine cowlings, wheel wells |
Related Aircraft Hardware
AN960 WashersFlat Washers - Light & Regular SeriesStandard flat washers available in light and regular series for various aircraft fastener applications. View AN960 Washers |
AN970 WashersLarge Area Flat WashersLarge diameter washers for applications requiring greater load distribution across softer materials. View AN970 Washers |
AN3 BoltsAircraft Standard BoltsStandard aircraft bolts designed to work with aviation washers and nuts for secure structural connections. View AN3 Bolts |
Tinnerman NutsSpeed Nuts - Flat & U-TypeSelf-retaining speed nuts for quick assembly applications on sheet metal and panel installations. View Tinnerman Nuts |
RivnutsBlind Threaded InsertsBlind rivet nuts providing threaded anchor points in thin sheet materials where back access is limited. View Rivnuts |
Screw KitsAircraft Screw AssortmentsComprehensive screw kits containing commonly used aircraft screws for maintenance and repair work. View Screw Kits |
Countersunk Washer Applications in Aviation
Countersunk washers serve critical functions throughout aircraft structures where flush mounting is required. Common applications include:
Airframe Applications
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Interior Applications
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Why Choose Airpart Supply for Aircraft Hardware?
EU Warehouse StockHardware stocked in our Dublin facility for fast delivery across Europe without customs delays. |
Aviation SpecificationAll hardware meets stringent aviation standards with full traceability and documentation. |
Technical SupportExpert team available to help with hardware selection and cross-referencing requirements. |
Competitive PricingTrade accounts available with volume discounts for maintenance organisations and operators. |
VAT SimplifiedEU VAT registration simplifies purchasing for European aviation businesses. |
Complete RangeFull selection of aircraft hardware from washers to bolts, screws, and specialty fasteners. |
Browse Our Complete Hardware Range
Visit our main Aircraft Hardware section for the complete range of aviation fasteners, washers, bolts, screws, nuts, and specialty hardware.
View All HardwareNeed Help Selecting the Right Washers?
Our technical team is ready to assist with hardware selection, cross-referencing, and bulk order enquiries.
Contact us: [email protected] | +353 1 846 5255
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