For 3/8" Tube 5/8-18 Threads (standard 3/8" tube fitting size) Standard Steel Most common SAE inverted flare sizes Plated for corrosion resistance.
Inverted Flare Tube Nut for 5/16" Tube (1/2-20 threads) (Pack of 12)
Inverted Flare Tube Nut for 1/2" Tube (3/4-18 threads) (Pack of 4)
Inverted Flare Tube Nut for 5/16" Tube (1/2-20 threads) (Pack of 5)
7/16-24 Inverted Flare Tube Nut Fitting 3/16 Brake Line, Red Zinc - 6pc kit
Inverted Flare Tube Nuts For 5/16 " Tube, 1/2"-20 Threads (Pack of 4)