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NUT, STOP MS21042-06

Part# MS21042-06
MFR Model# 07285-10
TypePart No.Thread
Dry Hex NutMS21042-066-32


The MS21042 all-metal stop nuts are designed for use in high temp installations (up to 450F). MS21042 nuts are shorter than the AN363 nut but develop the same tensile strength. MS21042 Hex Nuts (Lubed) are the same as MS21042- but have a dry film lube (dark grey).

Less 20% for quantity 100/Part No.
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WARNING: Cancer and Reproductive Harm -


Works great in small places.

John B Verified Purchase

NUT, STOP MS21042-06

February 12, 2022

Great quality Hardware!

Westwood A Verified Purchase

NUT, STOP MS21042-06

September 9, 2021

Ronald M Verified Purchase

NUT, STOP MS21042-06

June 24, 2021

Order shipped promptly, sales person very polite

Charles M
April 20, 2021

Great nut for small tight places and firewall forward where heat is an issue.

Lewis M
September 23, 2020

Use these on my race car to reduce weight and ensure a secure fit.

March 19, 2020

Highest quality, provides a light weight low profile locking fitting. Great for high heat applications.

February 29, 2020

Frederick C
November 11, 2019

As described. Recommended.

Ronald G
July 11, 2019

Michael D
February 28, 2019


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 MS21042-06 cad plated steel?

Yes, these are cad plated steel.

Q: What is the equivalent nut in Stainless Steel?

MS21043-4 (our part number 04-01388.)

Q: What is the reason for choosing a dry or lubed version of these Hex Nuts?

It helps prevent corrosion.

Q: Are these MS21042 ALL-METAL HEX STOP NUTS self locking?


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