In Either Case, The Fitting (Whether A Tube Nut, Union, Or Adapter) Must Be Selected To Match The End Form Of The Tube Or Port It Will Be Mating To Or A Proper Seal Will Not Be Possible.
Black Oxide Coated - 10 Per Bag Use For 3/16" Domestic Brake Lines. Automotive Hydraulic Brake Fittings Are Formed To Work With Either Sae Inverted Double Flare (Domestic And Japanese Vehicles) Or Iso Bubble Flare (European And British Vehicles). Steel Tube Nut,Black Oxide Coated,3/16 (3/8-24 Invtd),10/bag,NiCopp. AGS Fittings Are Comprised Of Tube Nuts, Unions (Couplers), And Adapters; Used Primarily In The Automotive Hydraulic Braking, Fuel, And Transmission Systems.