Anvil® 0318904646 FIG 390CI Square Head Countersunk Plug, 3/4 in Nominal, MNPT End Style, 125 lb, Cast Iron, Black Oxide, Domestic
Anvil® Countersunk Plug, Square Head, Series: FIG 390CI, Fitting/Connector Type: Plug, 3/4 in Nominal, MNPT, SCH 40/STD, 125 lb, 175 psi, Cast Iron, Black Oxide, -20 to 150 deg F, Domestic
https://www.utssupply.com//ASSETS/DOCUMENTS/ITEMS/EN/Anvil_International_BCSP112_Specification_Sheet.pdf