Male Inverted Flare Adapter From:

340 Series Male Inverted: * 340-03........-3 to 3/8"-24 Inverted 350-04........-4 to 3/8"-24 Inv & Washer Dual Seat 341-03........-3 to 7/16"-24" Inverted 1/2" Hex 341-04........-4 to 7/16"-24" Inverted 341-03-03...-3 to 7/16"-24" Inverted 7/16" Hex 342-03-03...-3 to 1/2"-20" Inverted 343-03-03...-3 to 9/16"-18" Inverted 348-03-03...-3 to 9/16"-20" Inverted 347-03........-3 to 3/8"-24 Inv & Convex Dual Seat