WASHER (P/N 656-402) - New Surplus
P/N: 656-402
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 | 6 Available |
Product Description
The 656-402 is a flat aircraft washer designed to distribute fastener load and protect mating surfaces in aircraft assemblies. This steel washer pairs with AN, MS, and NAS bolts and nuts, commonly used under fastener heads in avionics rack mounting and structural connections. The flat profile prevents fasteners from pulling through softer materials while maintaining even pressure distribution.
Installation follows aircraft maintenance manual specifications or FAA AC 43.13-1B guidance, using the correct washer type and torque values for the application.
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 656-402)?
The 656-402 is a flat aircraft washer designed to distribute fastener load and protect mating surfaces in aircraft assemblies. This steel washer pairs with AN, MS, and NAS bolts and nuts, commonly used under fastener heads in avionics rack mounting and structural connections.
Does the 656-402 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 656-402 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 656-402.
Can I order the 656-402 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.
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