[rcooled]

Don't know about the bent wire things, but both the threaded piece and pin with sharp points might be devices used to transfer hole locations from one work piece to another. I used something similar to line up thru holes for screws with their threaded counterparts on a removable panel for a cabinet. Screw or press the pin into a hole in one piece, then when you bring the two pieces together, a witness mark for a mating hole is left by the sharp point.