Right-handed screw

a screw, the threads of which, like those of a common wood screw, wind spirally in such a direction that the screw advances away from the observer when turned with a right-handed movement in a fixed nut.

See also: Right-handed

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References in periodicals archive ?
Computation of the various parameters is done separately for each type of screw element (partially or totally filled right-handed screw elements, left-handed screw elements and blocks of kneading disks) and for the die components.
For a right-handed screw, the rotation should be counterclockwise; for a left-handed screw, clockwise.
One type is full-flight right-handed screw elements and is often used for conveying materials from the feed section toward the die exit.
Computations are done separately for each type of screw element (partially or totally filled right-handed screw elements, left-handed screw elements, and blocks of kneading disks) and for the die elementary components.
The degree of grafting mainly increases through kneading disc block and left-handed screw element regions compared to right-handed screw elements.
According to the type of elements constituting the screw profile (left- and right-handed screw elements, block of kneading discs), different reactors can be chosen.
First consider a simple single-screw or self-wiping co-rotating twin-screw extruder with multiple feeders that contains only right-handed screw elements and a die.
This is a modular intermeshing co-rotating twin-screw extruder that had both right-handed screw conveying and kneading disc block elements.
Let's first consider a simple extruder that consists only of right-handed screw elements and a die.
Let's first consider a simple extruder which consists only of right-handed screw elements and a die.
We assume that the restrictive elements (left-handed kneading discs and screw elements) and the right-handed screw elements under pressure are completely full.
For this purpose only right-handed screw elements are used.