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K2000-4 ANCHOR NUT MS21051L4

Packaged Items
SinglePack of 5
MaterialPart No.Thread Size
All MetalK2000-41/4-28


MS21080, NAS1025N

MS21051, NAS682A, NAS1025A

MS21071, NAS696A

Elastic-Insert Anchor Nut

All Metal Anchor Nut
(K1000-Full Size / MK1000-Miniature)
California Prop 65 Warning Symbol

WARNING: The product may contain and/or expose you to a chemical(s) or substance(s) which are known to the State of California to cause cancer and/or birth defects or other reproductive harm.

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The item is not the pictured item but is the correct one by description.

Walter H
August 3, 2020

These miniature nut plates are great for applications that require a smaller footprint. The only thing to note is they are a little more difficult to install. What worked for me was to install a short machine screw to hold the nut plate with a cleco in the far end. Then, remove the cleco and use a rivet squeezer on the far end first. Remove the machine screw and install the second rivet.

June 29, 2020

Great service! Claudia went beyond normal expectations to find a source (NAS) of the one-leg anchor nut dimensions. Reasonably priced, quickly shipped.

Barry S
March 26, 2020

These anchors are very light and very strong.

Ned L
September 15, 2019

This all-metal fastener did just what I wanted it to do.

Kenneth P
July 26, 2019

Worked great, small and compact, fits into tight spaces because most do not have a big fiber insert but rather a crimped metal one.

Dave R
January 19, 2019

The part I received did not look like the photo. I was trying to match existing parts on the aircraft.

Roger K
March 18, 2021


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: Which of these part numbers corresponds to PART # MS21071L08?

Yes, our part # MK2000-08 is MS21071L08 ANCHOR NUT.

Q: Which of these part numbers corresponds to part #MS21051L4

K2000-4 is MS21051L4.

Q: What are the dimensions of the MK2000-08 nutplate?

0.716 inches long, 0.250 inches high, and Between 0.235 inches and 0.297 inches wide.

Q: What are the dimensions of the MS21051L08 nutplate?

0.935" long, .250" high, .277" wide.

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