This is the answer for instrument mounting. Works on any instrument I have tried.

Time A Verified Purchase

EZ NUT 2-1/4

Exactly what I needed! Wish I could have found these sooner.

Richard L Verified Purchase

EZ NUTS 3-1/8

Why they are just parts. They do make it ese more simple!

Warren H Verified Purchase

EZ NUTS 3-1/8

Make sure to clear the sticky tape from the hole opening so that the screws do not get caught in it.

Leinad A Verified Purchase

EZ NUTS 3-1/8

These EZ Nuts work exactly as advertised and save lots of time over other means of mounting round standard aviation size gauges. Worth the money!

Great product!

Louis B Verified Purchase

EZ NUT 2-1/4

Time saver and really handy in hard to reach areas.

Louis B Verified Purchase

EZ NUTS 3-1/8

Much easier than using the individual plate nuts that wear out easily making it almost impossible to remove an instrument when you need to.

Worked exactly as advertised. Much less hassle than old-style inserts.

Great product, easy to use, why did I not use these years ago is beyond me. One of the best right up there

Easy, no measurement issues for standard instruments. Worth having if you find yourself removing instruments to gain access to other things behind the panel.

As the owner of Superior Panel Technology, I can tell you that we strive to do all we can to make a line of useful, quality products. The majority of the products that we make and sell were developed as a result of our building a Velocity and a Lindy award winning RV6. I am sorry that Steve Stucky had such a problem with an EZ Nut. Prior to designing these, we took measurements on instrument bodies from several manufacturers. All of the 3 1/8 instrument bodies measured in the 3.10 range. We made the inner diameter of our 3 1/8 EZ Nut as large as possible (3.165) and still have enough material to securely hold the pressed in stainless steel nut. This easily accommodated the 3 1/8 instruments we tested which did include a few UMA 3 1/8 instruments. We have contacted UMA and have been informed that all of their 3 1/8 instruments do have bodies that measure 3.10 EXCEPT for their 3 1/8 altimeter which measures 3.18. We have also found out that the UMA 2 1/4 instruments have larger bodies than other manufacturers. Their 2.25 body measures 2.33 in outside diameter which is wider than our 2.29 opening on the smaller 2 1/4 EZ Nut. We have sold over 5,000 EZ Nuts over the past 3 years and can tell you that they do fit and work great. Customers tell us that our choice of stainless steel over brass makes a stronger product and the 3M double sided tape holds securely once mounted properly. To our knowledge, the UMA 3 1/8 altimeter and the UMA 2.25 instruments are the only ones that do not work with the EZ Nuts. We wish Steve would have realized that it did not fit and simply returned it for a refund. Please contact me directly if you discover that our EZ Nuts do not fit another manufacturers instruments and we will try to post this information. Thank you, Ken Whitaker (kwhitaker@sptpanel.com)

I thought this had Screws with it, good quality product I am using on new DG on my 1950 Cessna 170A. I like Spruce began use in 1960’s when I was Instructor at Harbor Aviation at Meadowlark Airport. 76 year old pilot in 70 year old airplane. All my best to youall.