Packaged Items
SinglePack of 5
Part No.Thread Size


Fabricated from steel and cadmium plated per QQ-P-416A, Type II, Class 2. The AN315 plain hex nut is of rugged construction and can carry the same high tension load as the AN310 castle nut. It requires an auxiliary locking device such as a check nut or lock washer. AN316 hex check nuts can carry half the tension load of the AN315 nut. They are used as a locking device for plain nuts, set screws, rod ends, etc.. Order by AN number. Add R or L after dash number for right-hand or left-hand thread.

Example: AN316-5L is a thin check nut with 5/16-24 left- hand thread

Less 20% for quantity 100/Part No.
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By far - the best nuts Ive ever had! (and Ive had a lot of nuts)

Marty H
June 4, 2020

The right part at the right price.

Alan A
May 4, 2020

Great Price and quick shipping. Would buy from them again.

Gary H
July 8, 2019

Edward B
March 12, 2019


Sport I
November 23, 2018


Sport I
November 23, 2018

When I requested help for the proper nut to choose for the Ball Bearing End rod that I purchased. Your customer service provided a quick response with the list of available nuts that I can used. KUDO

Daniel J
September 8, 2017

its a nut..... it works for me

Dave M
September 6, 2017


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 are the dimensions for the An315-3 nut? Im looking for the thickness and outer diameter.

It is .13" thick and would use a 3/8" wrench.

Q: What is the thickness of an AN315-6 nut?

0.27 inches.

Q: What is the thickness of the AN316-9 nut?

If you are referring to the height as the thickness then this will be 9/32.

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