John Guest screw-on connector (UNF/FFL)

John Guest hose connector for connection to, for example, a pressure reducer with a 7/16" thread connection. The UNF thread is a fine thread.

• Internal thread: 7/16" UNF ≙ 1/4" FFL
• Internal thread: 5/8" UNF ≙ 3/8" FFL

• PM4508F4S: 5/16" x 1/4"FFL [7/16"UNF]
• PI4512F4S: 3/8" x 1/4"FFL [7/16"UNF]