AAt312A Master Nutsert Assortment Kit

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Part# 04-01428
MFR Model# 38651-1


The A-T Series master assortment kit is ideal for prototype and maintenance repair applications. The rugged hard shell plastic kit contains quantities of the A-T Series Inserts and the AA 112 Hi-torquer tool. It also contains a full compliment of thread size conversion kits and instruction label. No warranty on these tools
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Kit Contains

Thread Size Insert Qty. Nutsert Part No. Conv. Kit
4-40 UNC 50 AATS2-440 AAT-202-440
6-32 UNC 50 AATS2-632 AAT-202-632
8-32 UNC 50 AATS2-832 AAT-202-832
10-32 UNF 50 AATS2-1032 AAT-202-1032
1/4-20 UNC 50 AATS2-420 AAT-202-420
5/16-18 UNC 50 AATS2-518 AA-T202-518
Kit. P/N AAT312A


Used Nutsert kit to repair my Cessna wing tip, the Rivnuts were spinning in the tip, made it difficult to remove hardware for position light/skybeacon. Doing a mod to keep the skybeacon from filling up with water.

Robert F Verified Purchase


November 2, 2022

Very complete and easy to use Kit !

Blue C Verified Purchase


February 3, 2022

Excellent tool, well worth the money.

D. G
January 19, 2021

Ive been needing a kit like this for years. I finally got in a bind and couldnt move forward with the project with out a nutsert kit. Ill have to expand the kit with some other common sizes, but this is a great starter kit. Easy to use. Simple and straight forward. Highly recommend.

January 30, 2020

Used this kit for many years : Borrowed. Finally purchased for myself. Like more than other options because it can be used in very confined areas. Great buy.

Donald B
August 2, 2019

Delivered as promised. Exceptional Service

January 7, 2018

Expensive for what you get & the quality. Does not come with a 1/4-28 mandrel. Used the 8-32 a couple times & Allen head driver is already starting to strip. Nutserts aren’t as good as I was expecting & spin easily if heavy handed employees put any torque on the screws when installing.

Fly B
December 29, 2023


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: Do you ship to Australia?

Yes, we export to nearly every country in the world.

Q: Are the nutserts steel?

They are steel C1010 or C1110.

Q: Where is this tool kit made?

It is made in the USA.

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