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NUT, STOP MS21045-9

Part# AN363-918
MFR Model# 39961-1
TypeMS No.ThreadPN
Cad PlatedMS21045-99/16-18AN363-918


The AN363 all-metal stop nuts are designed for use in high temp installations (up to 450F). Fabricated from cadmium plated per specification QQ-P-416C.
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These where out of stock, when can I expect shipment?

James. H
May 27, 2021

Only issue I have is I ordered 30 AN176-13A bolts also but they went back order, I did not receive a date that I would be getting them. Thank you

Chad W
April 7, 2021

Great service and parts at fair prices and process my orders promptly... Thank you all at Aircraft Spruce!

Russell M
March 16, 2021

good product delivery on time.

Alan K
February 19, 2021

Thank you for your stellar performance on all my orders through the years!

Ronald P
January 19, 2021

Starts thread easily. Lock works well. Clean quality Parts. Used them inside engine compartment.

James W
September 1, 2020

order was correct and shipped early Great service

July 6, 2020

These nuts are tight! Great for welding on tabs and brackets. They can take the heat and still work as intended.

Paul G
April 26, 2020

great service as always

James B
April 20, 2020

They are nuts. They have six sides and threads in the middle. The quality was great as expected. Will order again.

Aircraft O
March 9, 2020


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Is the photo for this nut correct? it appears to be a different style nut than the part number indicates.

It is is a stock photo and representative of the series. We do not recommend ordering by photo for hardware. It is always best to order by specifications or AN / MS number.

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