1960 MF-35

I removed the hydraulic lift cover of my MF-35, replaced the pump and hydraulic piston/cylinder. The originals were badly, badly scored and worn. And put the two-lever remote valve back on top of the cover. Anyhow, while putting it together -- I managed to dump my organized box of bolts/fasteners onto the dirt barn floor. I though had found them all, though no longer had the assurance of knowing which specific fastener went to which hole. Shortly after that, I had removed the head had it reworked then put it back together. A few days later, I found a special stud in the dirt where I had been working with the tractor for both the backend and engine. The stud is hollow with a hole in the side on the smooth shank between the two threaded ends. And one end has a nut. It looks like the stud has a passage way for oil, perhaps. anyhow, anyone recognize this special stud as part of the hydraulic system or top end of the engine? Thanks, Dan Submitted by Dan Oehmke, from MN