Normally, a 7/16 fine thread is 7/16-20. The threads for 1/4″ brake lines where a rubber hose screws into a wheel cylinder with a copper gasket ARE the 7/16-20 standard fine thread. 3/16″ lines use standard 3/8-24 threads for both the flare nuts and the gasketed fittings.
Moreover, should I use Teflon tape on brake lines?
Never use Teflon tape on ANY Hydraulic fittings it is a no no. The tape can break free and get lodged in the seals. This will definatly cause a leak. Any lubricant that gets into the hydraulic system will damage rubber components.
Subsequently, question is, are brake line fittings NPT? We use these in the Street Rod and Racing industries for fluid fittings such as oil lines, brake lines, and coolant lines. NPT threads are tapered to create an interference fit and often use thread tape or thread sealant to form a liquid tight seal without the use of crush washers, O-rings or gaskets.
Moreover, what are brake line fittings called?
Brake Line Fittings are sometimes called tube nuts or flare fittings.
What thread size is 3/16 brake line?
Get a standard American 3/8′ fine thread bolt or a standard American 3/16″ brake line; this will have a 3/8″ x 24 unf thread nuts on it. You will use the bolt (or nut) for your gauge.
9 Related Question Answers Found
Can you duct tape a brake line?
Absolutely not. I’ll grant you that duct tape is an amazing product. It can be used in everything from outerwear to appendicitis surgery. But it can’t fix your brake lines.
Will Teflon tape hold up to brake fluid?
Teflon tape is recommended for pipe fittings in a brake applications, but not for flare fittings. I would try PERMA-GASKET, brake fluid will not hurt it and it will not contaminate the system, but remember you don’t need a gallon of it to do this.
Do you use thread sealant on brake lines?
you guys know of any sealant you can use on leaking brake line fittings? NO absolutley not. They are designed to seal by means of compression on the flared surface as is is compressed between the tubing nut and the fitting. If it leaks tighten it some more.
How tight should brake line fittings be?
Brake lines fittings need to be tight, but as others mentioned, too tight and you will pull the threads right out of an aluminum caliper. The critical part is getting the copper crush washers to seal. As you are tightening the bolt, the washers deform slightly, creating a seal.
Can I use a single flare on brake lines?
Single Flares are only acceptable on low-pressure lines, but not acceptable for high-pressure brake systems. A single flare is just as it sounds, the line is flared out just once in a conical shape. Single flares are not acceptable for brake lines and tend to crack and leak quite easily.
Are brass fittings OK for brake lines?
Only material that should be used in brake lines is steel. I’ve seen brass ones recently) and your intermediate fittings, reducers, adapters etc. are usually brass.
How do I know my brake line size?
Look at the master cylinder where the lines are near each other to see if there are two sizes of tubing. You can also use a 1/4″ open end wrench to gauge your lines. It will fit easily onto 1/4″ line and will bang back and forth on 3/16″ line.
Can you reuse brake line fittings?
Use new fittings: You can remove the fittings from the old line and reuse them on the new line, but it is a better practice to use new fittings. The old fittings can be cracked, corroded and the threads could be damaged.
Can you use compression fittings on brake lines?
Compression fittings are used to join two pieces of brake line together. You cannot, under any circumstances, use compression fittings to repair the lines on a public transportation vehicle. Many states have banned the use of this repair on passenger vehicles, too.