Kupo Round Stud with 3/8 Inches-16 F and 1/4 Inches-20 F KG001112
This round solid brass baby 5/8" (16mm) stud is tapped with a 3/8"-16 female thread on one side, and a 1/4"-20 female thread on the other. This is a replacement stud for the Tilting Umbrella Adapter (KG007012).