3/8" - 24 Fittings for 3/16" tube

Choose between a pack of 4, 12 or 150 of the most popular brake line fittings for 3/16" tube (4.75 mm). This is called the "standard" fitting for 3/16" tube. These fittings have a hex size of 3/8" and the threads are 3/8" with a thread pitch of 24.