I agree with Stamcom, That looks like some sort of emt fitting that has been cut off.
Definitly something with a larger base fed through the hole and maybe fastened to the conduit somehow. Give the guy some points for creativity.
Keep a pair of flush cutting 4" side cutters in the bag just for tywraps. No sharp edges when you trim the tail, and you can cut them off without knicking wires. When I was in the airplane wiring business, we went through ty's by the gross.
TW
