You can use t-nuts for a lot of reasons. A t-nut specifically is for screwing machine screws into wood. This particular use case is using that machine screw as a leveler, but it’s not the only case.
Sometimes you just want a large, solid bolt to hold things together, but allow them to be taken apart. In those cases I try to put the t-nut the other way around so assembly tightens the nut.
Aren’t these used for adjustability? Meaning you can loosen or tighten them to deal with unevenness?
And if that’s the case, wouldn’t reversing the t nut result in the weight of the furniture pushing the t nut out of place?
You can use t-nuts for a lot of reasons. A t-nut specifically is for screwing machine screws into wood. This particular use case is using that machine screw as a leveler, but it’s not the only case.
Sometimes you just want a large, solid bolt to hold things together, but allow them to be taken apart. In those cases I try to put the t-nut the other way around so assembly tightens the nut.
They’re used a lot in cheap pressboard furniture, to keep the screws from stripping out in the weak “wood.”