PCP Threaded Fitting Adapter Female 1/2-20 UNF To Male 1/2-28 UNEF HPA Connector
High Precision Threaded Adapter made from hard aluminum alloy. Designed to connect 1/2″ thread accessories across UNF and UNEF formats. Option 1: Female 1/2-20 UNF to Male 1/2-28 UNEF. Option 2: Female 1/2-28 UNEF to Male 1/2-20 UNF.