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What is the relationship between a nut thread and a screw thread?
Wiki User
∙ 12y ago
when a spiral groove is cut over a hole, then it is nut thread.
when a spiral groove is cut over a shaft, then it is screw thread.
Wiki User
∙ 12y ago
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Why square threads are used in a screw jack?
§ Screw threads have better compression strength than other threads. § Due to low thread angle there is no radial pressure on nut. § Due to smaller angle, the lead of screw is less.
What causes gulling of a lock-nut when used on a stainless steel bolt?
It may gall if it is of the same material as the bolt. It may need to be lubricated, that will prevent this; also, if over-torqued it may gall or strip the thread.
What is the apron on a lathe?
The apron on a lathe is suspended from the saddle. It houses a gearbox connecting the carriage hand wheel to the rack enabling longitudinal movement of the saddle. It also houses the half nut and its lever for thread cutting and power feed levers.
Why does hydraulic jack for main engine cylinder head gets stuck while opening?
If you are using the jacks to undo the head nuts you must back the jack off a full turn, pump the jacks up to pressure and you should then be able to back the nut off less than 1 full turn. If the nut is brought up to a stop against the jack and tension is released it will bind. On tightening down you can screw the jack down onto the nut without backing off, as when you tension you turn the nut down and away from the jack.
When washer should be used in nut bolt joint?
the washer should be used where the exact matching between nut and bolt is required and also the chances of vibration is frequently occurring the washer is mainly used to make a good contact between the surfaces. the friction force occurring between the washer and the plate is so large because of u0 (co efficient of friction) . that it absorbs the vibration.
What kind of machine is a thread roll?
A thread rolling machine is used to cut external screw threads on round metal bars to take the internal screw thread of a nut (as in a nut and bolt).
What is a screw thread mechanism?
Picture a nut on a screw. You are holding the nut so it can't turn, but allow it to go up and down the screw. The screw is restrained so it can turn, but not move back and forth. As you turn the screw one way and the other, the nut will move up and down the screw. That is a trivial example of one very common screw thread mechanism.
What kind of machines e is a thread roll?
A thread rolling machine is used to cut threads on round metal bars, in order to take the screw thread of a nut (as in a nut and bolt).
What is the difference between screw and nut?
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 does the A signify in the thread call out of 250-20UNC-2A?
A refers to the external thread of a screw or bolt. B means internal thread, specified for nuts and inserts. For example a 2A bolt uses a 2B nut
Is the hub nut reverse thread?
Is a hub nut reverse thread
How do you fit bolt and nut?
Gauges to allow a person to calculate nut bolt size are widely available. Measuring the thread manually can be unreliable so it is far preferable to use a gauge.
Why square threads are used in screw jack?
§ Screw threads have better compression strength than other threads. § Due to low thread angle there is no radial pressure on nut. § Due to smaller angle, the lead of screw is less.
Why square threads are used in a screw jack?
§ Screw threads have better compression strength than other threads. § Due to low thread angle there is no radial pressure on nut. § Due to smaller angle, the lead of screw is less.
What is meaning of thread?
A very small twist of flax, wool, cotton, silk, or other fibrous substance, drawn out to considerable length; a compound cord consisting of two or more single yarns doubled, or joined together, and twisted., A filament, as of a flower, or of any fibrous substance, as of bark; also, a line of gold or silver., The prominent part of the spiral of a screw or nut; the rib. See Screw, n., 1., Fig.: Something continued in a long course or tenor; a,s the thread of life, or of a discourse., Fig.: Composition; quality; fineness., To pass a thread through the eye of; as, to thread a needle., To pass or pierce through as a narrow way; also, to effect or make, as one's way, through or between obstacles; to thrid., To form a thread, or spiral rib, on or in; as, to thread a screw or nut.
What is the split nut in lathe?
The split nut, also known as half nut enables thread cutting on a lathe. It is engaged around the lead screw (which is housed in the apron attached to the saddle) and moves the saddle in the required direction at the required pitch.
What is various possible reasons for thread not entering in nut?
what are various possible reasons nut not entering in thread
