A retaining nut could be the packing gland nut on a valve stem or the nut used on a flare or compression fitting
A flare joint is used on gas fittings and uses a nut and flare fitting to make the connection. This is a dry fit with no joint compound. The copper is soft enough that it compresses with the nut and forms the seal.
A nut is called screw when its head is tightend in component .but in case, tight of nut is not possible without bolt.since screw is tight without nut bolt it is not possible in case of nut.
What is the history evolution of nut?
yes its the nut of a horse chestnut tree.
Flare nut
A retaining nut could be the packing gland nut on a valve stem or the nut used on a flare or compression fitting
A flare joint is used on gas fittings and uses a nut and flare fitting to make the connection. This is a dry fit with no joint compound. The copper is soft enough that it compresses with the nut and forms the seal.
Flare nut wrenches are specially made to fit over steel brake and fuel ines to tighten the small nuts compressing the flared ends.
When you use soft copper tubing, you flare the end to make the connection. You put a nut on the tube and then flare the end so that it looks like a funnel. Then you can connect the tube to a fitting and when you tighten the nut it compresses the copper and makes a seal.
An open end wrench.
Flare nut wrenches are used on fuel lines. Regular sockets are used on head bolts.
Flare nut wrenches are just small wrenches, usually 5/16 or similar with a slot to pass over the pipe.
Pretty easy, there are holes inside and in the back of the flare that match up with holes in the steel fender, mounting hardware is screws from inside the fender to plastic nuts inside the flare, but any nut and bolt that will fit through the hole will work, you may need washers on the flare side though.
A flare wrench, also known as a flare-nut wrench, tube wrench or line wrench is used for gripping the nuts on the ends of tubes (like automotive brake lines and household plumbing). It is similar to a box-end wrench but, instead of encircling the nut completely, it has a narrow opening just wide enough to allow the wrench to fit over the tube. This allows for maximum contact on plumbing nuts, which are typically softer metals and therefore more prone to damage from open-ended wrenches. See images of flare nut wrenches by searching google and see what purchase links pop up. Cheers
Use a flare nut wrench, and hold whatever it is screwed into from turning to prevent damaging the tubing
Sound like the main line, front to back. Trace the line up to the front and find a solid place in the line, cut it with a line cutter and get a brake flaring tool. PUT A FLARE NUT on the front section of the line and using aflarein tool flare the end of the line from the front you're going to save. Buy some steel line and run it to the back where the rubber flex hose is. Cut the old line tight to the old flare nut and get a six point socket to fit tightly over the nut. Use a line wrench to keep the flex hose from turning and loosen the old nut. Measure you new line, cut it to fit, take it off the truck and PUT NEW FLARE NUTS ON THE LINE FIRST then flare both ends & install. Bleed the brakes at the wheel cylinders and it should be fine. If you have to replace the whole line its the same proceedure except you remove the flare nut at the front end and then make a longer line. Premade lengths are also available and you use connectors to join them.