NUT, TUBE COUPLING (P/N ms21921-4) - As Removed

Name: NUT, TUBE COUPLING
Brand: Aircraft Parts Store
SKU: ms21921-4
Availability: InStock

P/N: ms21921-4

Category: Nuts

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In Stock (2 available)

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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
As Removed	2 Available

Product Description

The MS21921-4 is a flareless tube coupling nut designed for 1/4 inch tube OD connections. This steel nut secures a mating sleeve to a 24° cone fitting, creating a leak-tight seal in aircraft hydraulic systems. Installation requires pairing with the corresponding sleeve and preset according to AS18280 specifications.

Verify tube size and thread compatibility per the aircraft maintenance manual before assembly. Manufactured to MS21921 military standards for aerospace fluid line applications.

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 NUT, TUBE COUPLING (P/N ms21921-4)?

What conditions is the ms21921-4 available in?

The ms21921-4 is currently available in the following conditions: As Removed. Each condition reflects the part's maintenance history and certification status per FAA standards.

How do I get pricing for the ms21921-4?

The ms21921-4 requires a custom quote. Submit a Request for Quote (RFQ) through our website or call our sales team at (904) 998-9101 for immediate pricing assistance.

Do you offer expedited shipping for the ms21921-4?

Yes, we offer same-day processing on in-stock items and provide 24/7 AOG (Aircraft on Ground) support for urgent needs. Standard, expedited, and overnight shipping options are available.