Product Info Catalog Outdoor Irrigation & Pond Supplies Irrigation Underground Sprinkler Swivel Adapter, 3/4 FHT x 1/2-In. FNT Underground Sprinkler Swivel Adapter, 3/4 FHT x 1/2-In. FNT Request a Quote UPC: 46878530379 SKU: 874955 Model Number: 53037 3/4" female hose thread x 1/2" female nominal thread swivel adapter, includes hose washer, constructed of high quality yellow brass bar stock, garden hose thread & npt connections.