Once you get a Standard size Expanded rivet round nut installed right, you won't need much upkeep. That's because it's locked in there solid. The main thing just keep an eye on the surface finish to stop rust,if rust gets in, it can ruin the threads or the stuff around it.
In spots where stuff rusts easily, choosing the right material and finish matters. Think like stainless steel A4 or a zinc flake coating. It doesn't hurt to check on it sometimes,look for rust, worn-off coating, or messed-up threads.
If you ever need to take it apart, you can't reuse that nut. You'll have to drill out the old one and put a new expanded rivet round nut in a different spot anyway.
Standard size Expanded rivet round nut are made to meet strict international standards, like DIN or ISO. This keeps the quality, performance, and sizes consistent, so you can get them pretty much anywhere in the world.
Compared to other options like weld nuts or clip-on nuts, their big advantage is that they let you make a really strong, vibration-proof threaded anchor in spots you can only reach from one side. You don’t need to weld them, which means you avoid problems like heat warping. And you don’t have to get to both sides of the material, either.
They work great with thin materials where there isn’t much space for threading. That’s why they’re a reliable and efficient fastening choice in tough industries that need solid connections.
Mon | M3-1.2 | M3-1.5 | M3-2 | M4-1.2 | M4-1.5 | M4-2 | M5-2 | M5-3 | M6-2 | M6-3 | M8-2 |
P | 0.5 | 0.5 | 0.5 | 0.7 | 0.7 | 0.7 | 0.8 | 0.8 | 1 | 1 | 1.25 |
dk max | 7.25 | 7.25 | 7.25 | 8.25 | 8.25 | 8.25 | 10.25 | 10.25 | 11.25 | 11.25 | 13.25 |
dk min | 6.75 | 6.75 | 6.75 | 7.75 | 7.75 | 7.75 | 9.75 | 9.75 | 10.75 | 10.75 | 12.75 |
dc max | 4.98 | 4.98 | 4.98 | 5.98 | 5.98 | 5.98 | 7.95 | 7.95 | 8.98 | 8.98 | 10.98 |
k max | 3.25 | 3.25 | 3.25 | 4.25 | 4.25 | 4.25 | 5.25 | 5.25 | 6.25 | 6.25 | 6.25 |
k min | 2.75 | 2.75 | 2.75 | 3.75 | 3.75 | 3.75 | 4.75 | 4.75 | 5.75 | 5.75 | 5.75 |
h max | 1.3 | 1.6 | 2.1 | 1.3 | 1.6 | 2.1 | 2.1 | 3.1 | 2.1 | 3.1 | 2.1 |
h min | 1.1 | 1.4 | 1.9 | 1.1 | 1.4 | 1.9 | 1.9 | 2.9 | 1.9 | 2.9 | 1.9 |
d1 | M3 | M3 | M3 | M4 | M4 | M4 | M5 | M5 | M6 | M6 | M8 |
Q:Are Standard size Expanded rivet round nut reusable once installed, or are they a permanent fastener?
A: Standard size Expanded rivet round nut are meant to be used once,they're permanent fasteners. When you install them, the nut body gets deformed (it expands) to lock into the tube, which makes it resistant to vibrations.
International Standards