MS21047L06K ANCHOR NUTS 6-32

Packaged Items
SinglePack of 5
MaterialThread SizeDescriptionPart Number
All Metal6-32Dimpled Rivet HolesMS21047L06K


Anchor nuts are designed for blind mounted applications where it is impractical to use hex nuts or where it is desirable to have an attached nut for ease of maintenance.

MS21047, NAS680, NAS1023A

All Metal Anchor Nut
(K1000-Full Size / MK1000-Miniature)

California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -

Tech Data

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easy to install

January 25, 2021

Very useful. Two hints: get the drill jig. Run a steel screw it first before you use a stainless screw. The locking is initially too tight for stainless.

Gordon T
January 2, 2021

Your company is amazing. Parts show up usually in 24 hours. Prices are usually fair. As you can tell from my order history I am a regular.

Rolf F
December 1, 2020

As shown in catalog

October 30, 2020

Materials arrived on time and were exactly what was needed to complete the task. Very high quality products.

William R
September 18, 2020

I have used these fasteners for many purposes over the years. They install by riveting, and since I usually used them close to edges of cowlings and panels, a rivet squeezer usually could be used, and made the job easy. The receptacles have a vibration-resistant feature (like metal lock nuts), and I have never had any machine screws inadvertently backing out or coming loose from them. The standard (full size) have enough space to install a Cleco and easily drill the hole to the other side.

Paul E
July 7, 2020

Exactly what I needed. You guys are the best!

Jim K
June 7, 2020

Im not sure what to say. Its a 6-32 blind nut that does what it is designed for

Dennis B
May 22, 2020

Exactly as advertised

Gary R
May 1, 2020

just what I ordered

Gary S
July 30, 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: What kind of steel are these nut plates made out of?

The tech data lists a few approved steel materials. Please review the Tech Data document in the "Tech Data" tab of this web page for all available information regarding these anchor nuts.

Q: What would the proper size rivet be for this anchor nut be?

The diameter is 3/32", but grip can vary. CCC-32 is a commonly used pull type flush rivet to attach anchor nuts.

Q: For the K1000-3 anchor nuts, what diameter rivets are used to anchor them?

They will take a 3/32" diameter rivet.

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