WASHER (P/N 57n18) - Serviceable
P/N: 57n18
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 |
|---|---|
| Serviceable | 10 Available |
Product Description
The 57n18 is a flat washer for aircraft fastener assemblies. It distributes load under bolt heads and nuts, providing a bearing surface that prevents fasteners from pulling through structural materials and access panels. This washer conforms to AN960 and NAS1149 plain washer standards used in airframe hardware.
Install under nuts securing access panels and other structural connections per aircraft maintenance manual guidance. Replace washers showing wear, distortion, or corrosion to maintain proper clamp load and prevent loosening during flight operations.
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 57n18)?
The 57n18 is a flat washer for aircraft fastener assemblies. It distributes load under bolt heads and nuts, providing a bearing surface that prevents fasteners from pulling through structural materials and access panels.
Does the 57n18 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 57n18 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 57n18.
Can I order the 57n18 in custom quantities?
Yes, we sell hardware in various quantities from single units to bulk lots. The WASHER is available in: Serviceable. Submit an RFQ for volume pricing or call (904) 998-9101 for quantity availability.
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