It is possible to have a metric thread on one end of a brake line, and an imperial thread on the other end. You can generally distinguish whether you have a metric or imperial threaded brake line from the year and origin of your vehicle: US after 1980 – could be either, thank you Detroit!
What size threads are used for brake lines?
When a rubber hose screws into a wheel cylinder with a copper gasket, the threads for 1/4″ brake lines are the 7/16-20 fine thread standard for the industry. Both the flare nuts and the gasketed fittings on 3/16″ lines are threaded with standard 3/8-24 threads. The two most often seen brake lines are 3/16″/4.75mm and 1/4″.
How do I identify my brake line fittings?
Identifying your brake line fittings consists of three steps: On rare occasions we come across a pipe thread, but typically brake hose fittings involve a flare. There are three types of flares on brake hose fittings: Note: The seat angles vary from the tube angles in order to seal the smallest diameter.
How do you attach brake line to threaded fittings?
When the threaded fittings are tightened into the female end of the union, they pull the line into the internal parts of the fitting. The angle of the threaded fitting matches up perfectly to the inside of the union. The flair of the brake line then sits up against the curves and is pressed over them.
What are the different brake line fitting groups?
Brake Line Fitting Groups: 1 Banjo 2 Center Support Fitting (bracket) 3 Male Fitting 4 Female Fitting 5 Other/Special Fitting
What type of thread are brake line fittings?
Brake Line Fitting: Assortment, 3/16 in OD Tube Size, 3/8" Thread Size, Steel.
What thread is a 3/16 brake line?
3/16"/4.75mm Metric thread brake line nuts and fittings.
What size thread is on 1/4 brake line?
7/16" ThreadBrake Line Fitting: Assortment, 1/4 in OD Tube Size, 7/16" Thread Size, Brass/Steel.
What size is brake line tubing?
Brake lines are most often 3/16- or 1/4-inch diameter and, while there will be no pressure difference between the two, there will be a difference in the amount of fluid delivered.
What thread is 5/16 brake line?
Brake Line Fittings - 5/16"-3/8" Domestic.
How do I know my brake line fitting size?
First, use calipers to measure the thread diameter. The male threads will be slightly smaller than the nominal size, and the female threads will be slightly larger than their nominal size. Next, measure the pitch. For imperial sizes, count the number of crests within a ½” section and multiply it by two to get TPI.
Are brake lines metric or standard?
There are two issues. Rigid brake lines - 4.75mm is the stock size. Brake line fittings - Yes, you need metric.
Can u use compression fittings on brake lines?
Do not use a compression fitting on your brake system. When you are on the road not only your safety but the safety of others is at risk if you have a compromised brake system. When you press your brake pedal the PSI (pounds per square inch) exerted on your brake system is great often over 1,000 PSI in normal braking.
What type of flare is best for brake lines?
double flaredAll brake lines need to be double flared, due to the high hydraulic pressure. If your brakes leak or the hoses crack, it could prove to be fatal. Single flared lines are suitable for low-pressure lines in other applications, but not your vehicle's brakes.
Can copper tubing be used for brake lines?
Are Copper-Nickel Brake Lines Legal? Due to the terrible history, the use of copper brake lines became illegal. Since the release of the new copper-nickel solution, the product is legal to use.
Is copper nickel brake line safe?
Copper nickel brake are DOT approved for hydraulic use. PSI ratings for copper nickel are only a little lower than stainless steel. Copper nickel brake line offers strong corrosion resistance both inside and outside.
What size are brake line flare nuts?
Brake line wrenches (flare nut wrenches or simply line wrenches) serve a specific purpose. Domestic cars often use 7/16-inch and imports 10 mm. Brake line wrenches (often called flare nut wrenches or simply line wrenches) serve a specific purpose in a mechanic's toolbox.
How is brake line tubing measured?
3:065:04how to verify brake line fittings are CORRECT - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo if we take the old brake line from the car. And we'll kind of just place it there what I'll do isMoreSo if we take the old brake line from the car. And we'll kind of just place it there what I'll do is try to get the right size by moving it like this. And then we have the size right there we'll go
What size are the brake lines on a 2003 Chevy Silverado?
Chevy Silverado Brake Line Set 2003 1500 HD Crew Cab 6.5 ft BLC-113-SS1A Stainless Steel.
How do you do a double flare on a 3/16 brake line?
0:593:35How To Form a Perfect 3/16" Double Flare - Hydraulic Flaring ToolYouTubeStart of suggested clipEnd of suggested clipLine to make this flare you'll need the 3 16 dye blocks to hold the brake line tubing as well as theMoreLine to make this flare you'll need the 3 16 dye blocks to hold the brake line tubing as well as the operation zero block which will set the tubing flush in the die blocks.
What size is Toyota brake line?
The standard Toyota brake line fitting is 10mmx1. Most fittings take a 10mm wrench for the hard lines (the male fittings) and 14mm for the female fittings.
What thread size are brake lines?
Typically, a 7/16 finethread is a 7/16-20 thread. When a rubber hose screws into a wheel cylinder with a copper gasket, the threads for 1/4″ brake lines are the 7/16-20 fine thread standard for the industry. Both the flare nuts and the gasketed fittings on 3/16″ lines are threaded with standard 3/8-24 threads. The two most often seen brake lines are 3/16″/4.75mm and 1/4″. A 3/16″/4.75mmbrake line (CNF-3) is used on practically all automobiles and trucks manufactured in the world, whereas a 1/4″ (CNF-4) is used on more expensive automobiles and vehicles constructed in Europe.
What size is a brake line fitting?
The two most common brake lines found are 3/16″/4.75mm and 1/4″. The smaller size is 3/16″/4.75mm brake line, CNF-3; and the larger size is 1/4″, CNF-4. 3/16″ is found on virtually all cars and trucks made in the world.
What size nut is on 1/4 brake line?
For 1/4″ line there are only two sizes of m/c nuts, 1/2″ x 20 unf and 9/16″ x 18 unf. It’s becoming common practice to upgrade the brakes on older cars.
Are 3/16 and 4.75 brake lines the same?
The two most common brake lines found are 3/16″/4.75mm and 1/4″. The smaller size is 3/16″/4.75mm brake line, CNF-3; and the larger size is 1/4″, CNF-4. 3/16″ is found on virtually all cars and trucks made in the world.
Do brake hoses need to be the same as original?
When replacing your brake lines, the replacement brake hose assembly does not need to look exactly the same as the original brake line, but make sure that the brake lines (especially the new brake hose fittings) will fit the surrounding area where they will be installed.
Can you measure the length of a brake hose?
The brake hose fittings may include long tubes with complex bends, making it hard to measure the brake line's overall length.
Can a brake hose interfere with a brake line?
Sometimes the brake hose fitting can interfere with another part of your brakes. Pay attention to any tight spots when removing your brake lines and communicate any restrictions to the vendor who will be fabricating your replacement brake lines.
Do brake hoses have flares?
On rare occasions we come across a pipe thread, but typically brake hose fittings involve a flare. There are three types of flares on brake hose fittings:
How brake line fittings are measured
Brake line fittings are divided by the type of flare, either inverted, bubble or DIN, brake line diameter, and thread count.
Most common brake line sizes
Most cars and light-duty SUVS and CUVs use 3/16″ diameter brake line. Larger trucks often use 1/4″ lines.
What does a brake line look like?
On the outside, the brake line fittings look like any threaded fitting or coupler. When you remove them, however, you can see that what looks like a standard threaded connector is housing several parts designed to fit together with high precision.
How to repair brake lines?
Tools for Repairing the Brake Lines 1 Flaring Tool: You can get a flaring tool specifically for your line size. We like this one. 2 Tubing Cutter: These are much safer to use for cutting delicate brake lines than a hacksaw. Check these out here. 3 Brake Flaring Kit: Or you can pick up an entire kit here if you don’t have any of the tools already on hand.
Why Doesn’t Teflon Tape Work?
The first factor is that the brake fluid used in the hydraulic braking system is a solvent and will dissolve Teflon tape and other sealants. The second factor is that the parts on brake lines are manufactured to fit directly together with the use of flaring, pressure , and precise machining. We will look at why these factors eliminate the need for Teflon tape.
What is brake hose?
Brake hoses are a flexible hose that connect your brake caliper to the metal tube. This tube makes up the bulk of your brake lines. The hoses are designed to be flexible because the movement of the wheels and suspension would destroy a solid line.
Why is flare important on brake lines?
This is why the flare is so important. If there is any gap or uneven surface, the union will fail, and the brake lines will leak. Teflon tape will not fix this problem.
What do you use to connect a hose to a caliper?
The hoses use copper washers at the end that connect the hose to the caliper. They use precise machining on the end of the hose that connects to the metal hose of the rest of the system. These two factors eliminate any need for sealants like Teflon tape. If they leak, your hose needs to be replaced and not just patched.
What is the best tool to cut brake lines?
Tubing Cutter: These are much safer to use for cutting delicate brake lines than a hacksaw. Check these out here.
American Grease Stick Steel, Polyvinyl Fluoride (PVF) Brake Line
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American Grease Stick Steel, Polyvinyl Fluoride (PVF) 51 Inch Brake Line
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American Grease Stick Steel, Polyvinyl Fluoride (PVF) 30 Inch Brake Line
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American Grease Stick NiCopp Copper-Nickel 51 Inch Brake Line
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American Grease Stick Steel, Polyvinyl Fluoride (PVF) 72 Inch Brake Line
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American Grease Stick NiCopp Copper-Nickel Brake Line
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American Grease Stick Steel, Polyvinyl Fluoride (PVF) 40 Inch Brake Line
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What sealant do I use for thru frame brake lines?
Plenty of thru frame brake line fittings and others use npt. I use a permatex thread sealant.
What does F mean on a thread?
The F stands for fuel. The roots and crests on the thread contact each other which eliminates the spiral path of the standard NPT threads. Hardware store fittings are most likely standard threads. Sometimes no leaks, sometimes leaks.
What to do if a pipe thread is squirting out of the fitting?
lubricate the fittings. If the compound squirts out of the tightened fittings you have used too much.Tapered pipe threads should seal without Teflon tape or compound. Using compound is like chicken soup when your sick. Might not do anything but can’t hurt.
What tape to use for black pipe?
Use the Teflon tape. Hard to get some of the poorly made pipe fittings to seal without it. Just for the naysayers, black pipe is used in hydraulics in all kinds of equipment and never fails.
Does Teflon tape work on brakes?
Pipe threads need some sort of sealer. In a plumbing application, Teflon tape or pipe dope is required as the threads are metal to metal contact. Teflon tape is not recommended on any hydraulic system including a brake system. One small piece of Teflon that comes loose can cause havoc in a hydraulic system. What I use on pipe threads on automobiles is a product from Loctite called 569 Thread Sealant or Loctite 545 Pneumatic/Hydraulic Seal. Of course no sealant is used on flare fittings.
Can you seal a pipe thread?
no sealer...but if you have fitting that wants to seep a little, then add a little pipe thread sealer and try again. Sometimes there are enough defects in the thread that it will not seal perfectly
Do pipe threads need sealer?
Pipe thread can use a lube, like never sieze, but no sealer is needed as the threads are tapered and will lock mechanically.