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MS21044N4 Elastic Stop Nut

Packaged Items
SinglePack of 25
MaterialThreadPart Number
Cad Plated1/4-28AN365-428A

Overview

These precision-made nuts are reliable and economical fastening devices The fiber insert gives a friction grip on the threads of the bolt and holds securely. The AN364 (thin) stop nut is for use in structural applications where the bolt is loaded primarily in shear or in any application where the tensile strength of the regular height AN365 is not required. Cad stop nuts are furnished to military specifications. Stainless is furnished to military specification and commercial grade.

AN364 (supersedes MS21083) - cad plated stop nuts
AN365 (supersedes MS21044) - cad plated stop nuts

Reference Chart

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Reviews

I can always depend on Aircraft Spruce to not only have the hardware in stock, but to also have quality hardware.

Marty T Verified Purchase

MS21044N4 Elastic Stop Nut

December 3, 2024

Good product. Everything as expected.

James R Verified Purchase

MS21044N4 Elastic Stop Nut (Pack Of 25)

November 9, 2024

Specialty B Verified Purchase

MS21044N4 Elastic Stop Nut

October 29, 2024

perfect fit

Dwight M Verified Purchase

MS21044N4 Elastic Stop Nut (Pack Of 25)

October 18, 2024

Tri-star C Verified Purchase

MS21044N4 Elastic Stop Nut

September 21, 2024

Kenneth L Verified Purchase

MS21044N4 Elastic Stop Nut

May 15, 2024

John B Verified Purchase

MS21044N4 Elastic Stop Nut

May 10, 2024

Dominique L Verified Purchase

MS21044N4 Elastic Stop Nut (Pack Of 25)

April 2, 2024

LuÍs H Verified Purchase

MS21044N4 Elastic Stop Nut (Pack Of 25)

April 1, 2024

LuÍs H Verified Purchase

MS21044N4 Elastic Stop Nut (Pack Of 25)

April 1, 2024

Q&A

Please note, Aircraft Spruce Canada'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 Canada 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: What is the color of the plastic in the AN365 elastic stop nuts?

For the certified version, the plastic will be either green, red, yellow, or purple. The different colors denote the different approved manufacturers. For the commercial grade stop nuts, which have not been tested to the MIL spec, the plastic will be white.

Q: What is the thickness of the AN365-624? This is for bolt length planning for propeller installation.

AN365-624A thickness/height is .453".

Q: AN365-1032 ELASTIC STOP NUT: What is the height/thickness?

The data sheet I have has the height at .236" +/-.016", and thickness/flat surface across flat surface, is .375".

Q: Is this the same nut as a MS20365-720C?

MS20365-720C is a 7/16-20 all metal stop nut. We offer AN363-720 and NAS1291X7 that are all metal, 7/16-20 all metal stop nuts. Either should work for an MS20365-720C unit.

Q: What is the replacement of the MS21044N8?

AN365-820A is MS21044N8.

Q: I would like to know the difference between: AN365C-1032 and AN365-1032C

These are both the same as the "C" represents that they are stainless steel.

Q: What is the replacement of the MS21044N04?

AN365-440

Q: What is the difference between a AN365-428C and an AN365-428A?

The C designates stainless steel. The A will be cad plated steel.

Q: What does it mean when you dont have the letter A at the end -AN365-xxxA -?

The A nuts will be cad plated steel.

Q: What is the reference of the elastic stop nut for AN5 and the reference of Washers for AN5?

AN5 bolts use AN365-524 locknuts and AN960516 flat washers.

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