Re: Source for captive (door hinge) nuts
Original ones i believe are 3/8" fine thread.
I made some out of unistrut nuts. They are 3/8" standard thread. As for the cage I took some tubing and sliced it down the side, drilled a larger hole for the bolt to pass through dropped in the unistrut nut then welded the sliced tubing behind the bolt hole. Just make sure the nut has room to slide a little.
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