Midland Metal FSO240488 Straight Connector, 13/16 in Male ORFS x 1/2 in MNPT, Steel

Adapter, Connection Size 1: 1/2-in, Connection Type 1: Male O-Ring Face Seal, Connection Size 2: 1/2-in, Connection Type 2: Male NPTF, Steel, 13/16-16 x 1/2-14 Thread, 375 deg F Operating