I have a fairly heavy (a few kg) hanging lamp which came with this ceiling mount (and no instructions):
So, to mount it, I can remove the bracket from the cover, screw it to the ceiling, put the cover back over the bracket, and screw the bolts back in from the outside to attach them. But there's a problem.
On the inside of each bolt is a split washer and nut. How can I get the nut back on the bolt once I have the cover back on and flush with the ceiling? Apart from the central hole for the cable, there are three additional holes in the cover. These are unfortunately useless for getting at the nuts on the inside: they attach to three anchors for steel wires which support the weight of the lampshade, so they will necessarily be blocked when I put the cover on, and in any case don't line up with the bracket:
The bracket itself is threaded, so the nuts don't seem to be strictly necessary. On the other hand, since they came with the fitting and it needs to hold a fair amount of weight, I'd prefer to have them in place if possible. Am I missing something here?