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The Fragola -6AN socket hex port plug is a black hex-style plug sized for -6AN (9/16-18) threads. It provides a finished, serviceable seal for threaded ports in fluid and plumbing setups where AN fittings are used. Fragola's port plugs are compact maintenance items for fabricators and tuners who need to close or protect tapped ports during assembly, testing, or storage.
Fragola -6AN (9/16-18) Socket Hex Port Plug - Black
