When I bought my project it was disassembled for quite some time. When I took the fabric off the tail of the aircraft these two studs with nuts fell out. I can’t seem to identify them off the parts reference. A bunch of parts had been stuffed into the fuselage so they may not be from the tail. The nuts on what looks like a stud are rather large and not locking. Just trying to identify where they be from or their purpose if any