AN960 Regular Series Flat Washers
NAS1149 Standard Aircraft Hardware | Cadmium Plated & Stainless Steel | EU Stock Available
Professional Aircraft Washers for European Aviation
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Airpart Supply Ireland distributes comprehensive stocks of AN960 Regular Series flat washers from our Dublin warehouse, providing European aviation operators with immediate access to certified aircraft hardware. AN960 Regular Series washers conform to NAS1149 specifications, offering thicker construction (.032" thickness) compared to Light Series washers for applications requiring enhanced load distribution and durability. These washers are essential components in airframe assemblies, engine installations, and structural hardware applications across general aviation, business aviation, and commercial aircraft maintenance throughout Europe. Available in both cadmium-plated steel (NAS1149F series) for corrosion resistance and stainless steel (NAS1149C series) for applications requiring superior environmental protection, our AN960 Regular Series washers are supplied with full FAA/PMA certification and EASA Part-21 documentation. We maintain comprehensive inventory from size #4 through 3/4" diameter to support Cessna, Piper, Beechcraft, Cirrus, and Diamond aircraft maintenance across Ireland, Germany, France, Spain, Italy, Netherlands, Belgium, and throughout the European Union. Our Dublin facility enables 2-5 day delivery to European customers with proper VAT handling, customs documentation, and technical support from experienced aviation hardware specialists who understand European maintenance requirements and regulatory compliance standards. |
Technical Specifications & Applications
NAS1149 Standard Specifications
AN960 Regular Series washers meet stringent National Aerospace Standard NAS1149 requirements for dimensional accuracy, material properties, and surface finish. These washers feature .032" nominal thickness across all sizes (compared to .016" for Light Series), providing enhanced load distribution and structural integrity for applications requiring increased bearing surface area and improved clamping force distribution.
Material Options
Cadmium-Plated Steel (NAS1149F Series)
Manufactured from low-carbon steel with QQ-P-416 Type II cadmium plating, providing excellent corrosion resistance for interior applications and controlled environments. The cadmium coating offers superior lubricity characteristics and prevents galling during installation. These washers are ideal for general airframe hardware, electrical system installations, and control system assemblies in Cessna and Piper aircraft.
Stainless Steel (NAS1149C Series)
Manufactured from CRES (Corrosion Resistant Steel) Type 304 or 316, offering superior corrosion resistance for exterior applications, high-moisture environments, and installations requiring extended service life without maintenance. Stainless steel washers eliminate the risk of hydrogen embrittlement and provide excellent performance in engine compartment installations, exterior structural hardware, and exhaust system applications across European aircraft fleets.
Quality Standards
All AN960 Regular Series washers supplied by Airpart Supply are manufactured under AS9100 quality management systems with full traceability documentation. Each batch includes material certification, dimensional inspection reports, and plating thickness verification where applicable. Our inventory includes both FAA/PMA approved components and manufacturers meeting EASA Part-21 requirements for European aircraft maintenance.
Complete AN960 Regular Series Specifications
Click any part number to view current availability and pricing. All dimensions in inches.
| Bolt Size | O.D. | I.D. | Thickness | Cadmium Plated Part Number |
Stainless Steel Part Number |
|---|---|---|---|---|---|
| #4 | .312" | .124" | .016" | NAS1149FN432P | NAS1149CN432R |
| #6 | .375" | .149" | .016" | NAS1149FN632P | NAS1149CN632R |
| #8 | .375" | .174" | .016" | NAS1149FN832P | NAS1149CN832R |
| #10 | .438" | .203" | .032" | NAS1149F0363P | NAS1149C0363R |
| 1/4" | .5" | .265" | .032" | NAS1149F0463P | NAS1149C0463R |
| 5/16" | .562" | .328" | .032" | NAS1149F0563P | NAS1149C0563R |
| 3/8" | .625" | .390" | .032" | NAS1149F0663P | NAS1149C0663R |
| 7/16" | .750" | .453" | .032" | NAS1149F0763P | NAS1149C0763R |
| 1/2" | .875" | .515" | .032" | NAS1149F0863P | NAS1149C0863R |
| 9/16" | 1.062" | .578" | .032" | NAS1149F0963P | — |
| 5/8" | 1.118" | .640" | .032" | NAS1149F1063P | — |
| 3/4" | 1.312" | .765" | .032" | NAS1149F1290P | — |
Note: Larger sizes (9/16", 5/8", 3/4") are typically available in cadmium-plated finish only. Contact our technical team for stainless steel alternatives or custom requirements.
Aircraft Applications
Airframe Structural Applications
AN960 Regular Series washers provide critical load distribution in airframe structural assemblies including wing attachment fittings, fuselage frame connections, and landing gear mounting hardware. The .032" thickness ensures proper bearing surface area for structural bolts used with AN3, AN4, AN5, AN6, AN7, and AN8 series bolts in Cessna, Piper, Beechcraft, Mooney, and Cirrus aircraft structures.
Engine Installation Hardware
Used extensively in engine mounting assemblies for Lycoming and Continental engines, AN960 Regular Series washers withstand vibration and thermal cycling in engine mount attachments, accessory drives, and exhaust system hardware. Stainless steel variants are particularly suited for exhaust manifold installations and high-temperature applications across European general aviation fleets.
Systems Mounting Hardware
Essential for securing electrical components, avionics equipment, hydraulic systems, and fuel system installations. Regular Series washers provide proper load distribution for equipment mounting brackets, instrument panel attachments, and control system hardware throughout the aircraft.
Control System Linkages
AN960 Regular Series washers are specified in flight control systems, trim systems, and cable tension assemblies where proper washer thickness ensures correct bearing surface and prevents hardware loosening due to vibration. Used with clevis bolts and castle nuts in primary and secondary flight control installations.
Why Choose Airpart Supply for AN960 Regular Series Washers?
Dublin Warehouse Stock Availability
Our dedicated Dublin facility maintains comprehensive inventory of AN960 Regular Series washers in both cadmium-plated and stainless steel finishes. European aviation operators benefit from immediate availability without the delays and complications associated with UK imports, particularly important for AOG situations and scheduled maintenance deadlines across Ireland, Germany, France, Spain, Italy, Netherlands, Belgium, and throughout the European Union.
Fast European Delivery Network
Standard 2-5 business day delivery to major European aviation hubs including Dublin, Amsterdam, Frankfurt, Paris, Madrid, Rome, Brussels, and Vienna. Our streamlined logistics eliminate post-Brexit customs delays and ensure predictable delivery schedules for maintenance planning. Express shipping options available for critical requirements and AOG support across European aircraft operators.
Proper VAT Handling & EU Compliance
All transactions processed with correct VAT documentation for European Union customers, eliminating unexpected tax charges and import complications. Our Dublin location ensures full EU regulatory compliance for cross-border aviation parts distribution, with proper customs documentation and duty handling for maintenance organizations throughout Europe.
EASA Part-21 Documentation Support
Every shipment includes comprehensive certification documentation meeting EASA Part-21 requirements and EASA Part-145 maintenance organization standards. Our technical team understands European regulatory requirements and provides proper certification packages including material certificates, conformity statements, and traceability documentation required for European aircraft maintenance releases and continuing airworthiness management.
Technical Support from Aviation Specialists
Our experienced team provides application guidance, material selection advice, and cross-reference support for European aircraft types. We assist with washer selection for specific installations, compatibility verification with various bolt types, and material recommendations based on environmental conditions and regulatory requirements. Technical support available in English for international customers throughout European time zones.
Consolidated Hardware Procurement
Combine AN960 Regular Series washers with our complete range of aircraft hardware including AN3 bolts, AN960 Light Series washers, AN970 lock washers, castle nuts, safety wire, and complete structural hardware to minimize shipping costs and simplify procurement for European maintenance facilities.
Order AN960 Regular Series Washers from Our Dublin Warehouse
Fast European delivery • Proper VAT handling • EASA Part-21 documentation • Expert technical support
Contact: +353 1 293 5408 | [email protected]








