WASHER, COUNTERSUNK (P/N MS21299C3) - New Surplus
P/N: MS21299C3
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 | 21 Available |
Product Description
The MS21299C3 is a steel countersunk washer conforming to MS21299/NASM21299 military standards. It provides a flush bearing surface beneath flat-head screws, distributing loads across thin airframe materials. Install the washer directly under the screw head in airframe skin applications, then torque per the aircraft maintenance manual.
The countersunk profile ensures the fastener sits flush with the surface, maintaining aerodynamic contour. Verify the MS21299C3 callout in your aircraft's Illustrated Parts Catalog before installation.
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, COUNTERSUNK (P/N MS21299C3)?
The MS21299C3 is a steel countersunk washer conforming to MS21299/NASM21299 military standards. It provides a flush bearing surface beneath flat-head screws, distributing loads across thin airframe materials.
Does the MS21299C3 meet AN/MS/NAS aviation specifications?
Aircraft hardware is manufactured to military and aviation specifications. The WASHER, COUNTERSUNK 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 MS21299C3 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 MS21299C3.
Can I order the MS21299C3 in custom quantities?
Yes, we sell hardware in various quantities from single units to bulk lots. The WASHER, COUNTERSUNK is available in: New Surplus. Submit an RFQ for volume pricing or call (904) 998-9101 for quantity availability.
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