The nut has 6 splines on the outer edge, looks more like a gear. What the hell kind of nut is this? I'm currently using a flathead screwdriver against the splines to turn it in a prying/pushing fashion. It's on a lag bolt coming out of a wall into a bannister, and the (very small) access hole is on the underneath side of the bannister. Imagine you're looking up at the underbelly of a bannister right where it meets the wall, and there's an access hole where you can see a pointed bolt coming out of the wall and into the bannister, with this gear shaped nut (and washer) on the bolt.
Thanks!
Thanks!