Union Hex Nipple 9/16-18X7/16-20 OR HEX UNION

Union Hex Nipple, Connection Size 1: 3/8-in, Connection Type 1: Male O-Ring Boss, Connection Size 2: 1/4-in, Connection Type 2: Male O-Ring Boss, Steel, 9/16-18 x 7/16-20 Thread, 375 deg F Operating