The tongue clevis is a cast aluminum part that inserts into the end of the 1" diameter tongue tube and is secured by a 1/4" hex bolt. It receives the 3/8" hitchpin and connects to the PH23 hitch mount.
The clevis is made of cast aluminum. It is 3" long and 1 1/2" wide at the clevis end and 7/8" in diameter on the insert end. A 3/8" inch diameter hole is drilled in the clevis end and a 1/4" hole is drilled in the insert end.
Fits into a 1" tube with a .058 wall thickness.