Adam Hall 5660 Square Nut Pack

I use them in my racks in my studio. They do the job. For equipment that is not move i and out of racks they do very well. If I were to my racks all over again, I might have chosen a different apporach regarding the kind of rack rails used. This is beacuse it can be a bit fiddly to hold on to these while screwing in new equipment (alone) in between other equipment. So this is something to keep in mind. But they are good quality and should last you a lifetime if you don't loose them.

these worked well in my rack with no issues

A pack of 20 Pieces of Square Nuts (Nut size: M6).
These nuts are ideal for Eco racks. These are made of steel with galvanized surface and silver colour.
Dimensions: Height 3.72 mm, Width 10.78 mm, Length 10.78 mm. Weight: 0,003 kg.
These are the standard square nuts for Eco racks and I used these to build my rack and wherever needs to use M6 screws.
Good quality and value for that money.
I recommend these.

One can never have enough nuts no rough edges nice and smooth

Very good quality, use for rack mounts and cases. I like it.