Part# 05-01930
MFR Model# 3772
ModelABCHTR1AlloyPart No.


These brackets can be used in many applications as ultra light structures
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

Reference Chart


Heavy duty wing bracket, and light weight

David G
November 4, 2017

Great looking brackets zinc chromate paint. Very good quality. I am using it in my KR2 build

July 3, 2017

Be careful, bracket 3772 does not have the 17/64 holes shown, it has .185 holes. Aircraft spruce took care of me, but I did want to notify others that the smallest bracket has undersized holes.

Jason S
February 1, 2020

I have been making my own brackets for years, but decided to purchase one B3765 1 Aluminum bracket to see if I could find a reasonably priced, ready-made substitute. After an initial review of the product I recd, I would have to say this is the worst example of quality that I have ever seen come out of Aircraft Spruce...and I have been buying from them for many, many years. What I recd was a roughly cut, sharp edged, unfinished, asymmetrical hunk of aluminum channel. I will admit that the holes looked to be in the correct location, but I tossed it in the recycle bin before I had a chance to check the hole location and diameter. What I recd wasnt even close to what the nice photo on the web site showed. I wish I could drop a photo into this review...

March 9, 2020

very rough machine work, holes were offset by 5 degrees. I have to send them back, very disapointed.

Ralph V
January 25, 2020


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: Are the aluminum brackets T6 quality?

In the online grid, there is a column for Alloy. You can see that some of the brackets are T6 and others are T5.

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