screw
Vises, jacks and positioners. Please see the link.
The lead of a screw refers to the distance a screw advances in one complete turn. It is determined by the screw's pitch, which is the distance between corresponding points on adjacent threads. A screw with a larger lead will advance more with each turn compared to one with a smaller lead.
A lead screw is known as a power screw or translation screw, is a screw designed to translate radial motion into linear motion. They find their use in machine slides (such as in Lathe machines), Vices, Screw Presses, and Jacks etc.For more thrust applications, you require a larger diameter screw . That's because the screw is similar to a column subject to compression and tension. During compression, the screw should not bow or deflect. And during tension, the screw must support the load without failing.
when lead of the screw is equal to the pitch it is called single threaded screw
You use a Phillips screw driver on a Philips screw.
The lead screw moves the turret by a precise increment for every rotation of the screw. This allows the machine to generate threads in a workpiece, to generate precise length and diameter dimensions, and to maintain a constant rate of metal removal.
presuming you mean the lead screw on a lathe, used when cutting threads on the workpiece, then the screw itself is obviously fixed, but the rotation of it may be able to be changed, depending on the lathe manufacturer.
To screw screws'!
Sometimes the propeller on a boat is called a screw & they used to be made of lead. So they would be found at the end of the propeller shaft.
#4 Screw use a 1/16" Drill #6 Screw use a 3/32" Drill #8 Screw use a 1/8" Drill #10 Screw use a 9/64" Drill #12 Screw use a 11/64" Drill #14 Screw use a 3/16" Drill
what is a leadscrew