WASHER (P/N 66-12990-2) - New Surplus
P/N: 66-12990-2
Category: Fasteners & Hardware
This product requires a custom quote. Please contact our sales team for pricing information or submit an RFQ (Request for Quote).
Available Inventory
| Condition | Stock |
|---|---|
| New Surplus | 5 Available |
Product Description
The 66-12990-2 is a flat washer that distributes clamp load and protects mating surfaces in bolted aircraft joints. Manufactured from steel, stainless steel, or aluminum per AN960/NAS1149 standards, this washer sits beneath bolt heads or nuts in panel and bracket assemblies. It prevents fasteners from pulling through softer materials and reduces stress concentration at connection points.
Select size and thickness according to your aircraft's Illustrated Parts Catalog, then torque per FAA AC 43.13-1B guidance. Replace washers if castellations won't align after torquing.
Please note: Product descriptions are provided for informational purposes. Always refer to your aircraft's Illustrated Parts Catalog (IPC) to verify part compatibility and specifications.
Frequently Asked Questions
What is the WASHER (P/N 66-12990-2)?
The 66-12990-2 is a flat washer that distributes clamp load and protects mating surfaces in bolted aircraft joints. Manufactured from steel, stainless steel, or aluminum per AN960/NAS1149 standards, this washer sits beneath bolt heads or nuts in panel and bracket assemblies.
Does the 66-12990-2 meet AN/MS/NAS aviation specifications?
Aircraft hardware is manufactured to military and aviation specifications. The WASHER conforms to its applicable AN (Air Force-Navy), MS (Military Standard), or NAS (National Aerospace Standard) specification. Contact us for specific specification details.
What material is the 66-12990-2 manufactured from?
Aviation hardware is available in various materials including cadmium-plated steel, stainless steel, aluminum alloy, and titanium depending on the application. Contact us for material certification and specifications for the 66-12990-2.
Can I order the 66-12990-2 in custom quantities?
Yes, we sell hardware in various quantities from single units to bulk lots. The WASHER is available in: New Surplus. Submit an RFQ for volume pricing or call (904) 998-9101 for quantity availability.