6LV-N-HFR4-9.9
316L VAR Stainless Steel, FITOK FR Series Metal Gasket Face Seal Fitting, High-Flow Connections, HFR Female Nut, 1/4 in. Female Nut, Nut Hole Size 0.39 in. (9.9 mm)
6LV-N-HFR4-11.7
316L VAR Stainless Steel, FITOK FR Series Metal Gasket Face Seal Fitting, High-Flow Connections, HFR Female Nut, 1/4 in. Female Nut, Nut Hole Size 0.46 in. (11.7 mm)