Do you have a screw loose? are your buttons buzzing?

[mandotool]

You might want to get some of these..
M2 belleville serrated lock washers..
NFI ..

[MikeEdgerton]

McMaster's website is a bit strange but here is the link to the product:

https://www.mcmaster.com/catalog/125/3348

If they don't pop up they are at the top of the second section from the top.

If you want to cut and paste the item number it is: 90895A001

[mandotool]

Thanks Mike, i forgot to add the link...this may get you there more exactly..
https://www.mcmaster.com/90895a001
Or you can just order part#90895A001 over the phone... (609) 689-3000

and again...i have no financial interest in Mcmaster Carr...
other than i have been counting on them for decades to deliver all kinds of high quality parts and materials next day.. You can place an order at 5:45 pm and have it in your hands 14 hours later... Or they will even messenger it to you same day.. if you are in a real pinch..
Gotta love these people..

[Jeff Mando]

Those look nice!

[sliebers]

That is a great solution. Maybe Waverly will take note and start installing these on new tuners?

[MikeEdgerton]

I doubt it, they are making something that looks vintage and those look modern

I ordered some already.

[sliebers]

Does "vintage" mean the screws should loosen up a few times a month?

[MikeEdgerton]

Doesn't matter actually to the mandolin community, look at end pins. They should have changed decades ago. By the way, the screws on my Waverly tuners on my F5G have never loosened. I'll see if the later ones hold as well. I installed a set last weekend. I'm still going to look at these though. I do think they are a good idea.