Part# AT532-61
MFR Model# ATI532-61
Part No.Pilot & Drill Size
AT532-61.098" (#40)


Provide an accurate means of drilling duplicate matching holes in over-lapping sheets. Hole to be duplicated is drilled though bushing when pilot is in place.
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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.


Very practicle and easy to use.

John O Verified Purchase


September 3, 2022

Works perfectly!!

Sam R
November 5, 2019

Works great. When you are working alone, after you find the hole, clamp it.

Joseph G
January 20, 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: Exactly how do these work? Can I drill through an existing hole to make a new hole in the piece behind it, or do I need to drill the new hole from the other side?

If you need to duplicate a hole that is on the bottom sheet to the top sheet, just slide the bottom sleeve with the male pilot between the sheet until the pilot is in the excisting hole. The top sleeve has a bushing with a hole in the middle, which you would drill your hole through. You then have two sheets of material with hole drilled in the same spot.

Q: What is the length (reach) of the hole duplicator? Part # AT532-61

The length of this hole duplicator is approximately 8-5/8".

Q: Am I correct in assuming that the .129 hole finder would be the correct purchase for 1/8th inch holes?

That is correct. The AT532-62 is used for 1/8", #30, holes.

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