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Part# 12-04723
MFR Model# 23800


Washer Wrench Set. This is a (4) piece washer wrench set. It's used to hold AN/aircraft washers to reach into hard to reach areas.


Absolutely the tool we needed for our RV12 build.

Dave Y
April 10, 2021

Love this tool! Absolutely great for those hard to reach places.

Peter M
March 22, 2021

Absolutely a must have! I was using home-made tools to get the washers in place and I was pretty good at it but still, it was a pain. With these washer wrenches its just easy. I love this set and if I loose them, I will buy these again!

Benjamin K
March 9, 2021

I love this tool set. Useful even if washer doesnt fit tool exactly. Just wedge washer into the space and then use next larger tool to position the washer.

Gail P
April 13, 2020

An indispensable tool for getting washers on bolts in tight spaces without dropping them!

Jack C
June 5, 2017

look like they Should work. Havent found any to securely hold a given washer yet. They arent marked as for washer size and emplaced washers are NOT held securely. Mixed bag so far, but will keep trying

September 9, 2018


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 diameters of the washers that they hold?

The washer wrench set has (4) wrench pieces that have different round cut-outs on each end of the (4) wrenches. The wrenches are made from .042 thick 301 stainless steel. The wrenches are laser cut to size. They cover 8 sizes of AN960 aircraft flat washers -- #4 / #6 / # 8 / #10 / 1/4" / 5/16 / 3/8 / 7/16 / & 1/2" for bolt and / or screw sizes.

Q: Are these made in the USA?

Yes, they are made in the USA.

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