You can use this BANJO bulkhead tank fitting as an inlet or outlet for faucets, pipes, and spigots. Can be mounted in walls, tanks, or panels Includes a body, gasket, and locking nut with wrench flats. Item: Bulkhead Tank Fitting. Body Material: 316 Stainless Steel. Connection Type: FNPT x FNPT. Required Hole Size: 3. Range: -20 Degrees to 150 Degrees F.