screw

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Related to Allen screw: Allen key, Allen head

screw

(skrū),
A helically grooved cylinder for fastening two objects together or for adjusting the position of an object resting on one end of the screw.

screw

[skro̅o̅]
Etymology: MFr, escroue
a solid cylinder with a helical thread on its exterior surface, used to hold two objects together.

screw

Orthopedics
noun A threaded internal fixation device, usually constructed of stainless steel, commonly used to fix bones in place, either alone or with a plate.
 
Vox populi
verb Popular, to treat unfairly.

screw

noun Orthopedics A ubiquitous threaded internal fixation device, usually constructed of stainless steel, commonly used to fix bones in place, either alone or with a plate. See Bionx absorbable cannulated screw, Cancellous screw, Cannellated screw, Cortical screw, Cross-locking screw, Herbert screw, Interference screw, Lag screw Vox populi verb
1. Popular, 'to treat unfairly'.
2. Vulgar; to have intercourse.

screw

(skrū)
Helically grooved cylinder for attaching two objects or adjusting position of an object resting on one end of screw.

screw

1. a mechanical device for fixing one object to another, characterized by a spiral ridge cut on the external surface of a cylindrical rod of decreasing diameter towards its point. This is a male screw. In a female screw the screw is cut on the inside of a cylindrical cavity.
2. a colloquial term for a worn out or inferior horse.

AISF bone screw
see buttress thread bone screw.
buttress thread bone screw
the thread is not a simple V as in the standard thread but has one side of the groove at right angles to the direction of the screw and the other side at a 45° angle. Called also AISF, Howmett compression, Richards-Bechtol.
cancellous bone screw
has a coarse thread; threaded to only the first third of the length of the screw.
cortical screw
threaded the full length of the screw; fine thread to hold in dense bone.
Howmett compression bone screw
see buttress thread bone screw.
lag bone screw
used as a compressing unit between two fragments with the first half of the screw near the point threaded, with the diameter of the ridges greater than that of the unthreaded half near the head. As the ridged part of the screw bites in the walls of the drill hole in the distal fragment, the unthreaded part is free to move within the drill hole in the proximal fragment, thus compressing the two pieces of bone together.
Richards-Bechtol bone screw
see buttress thread bone screw (above).
standard bone screw
with a V thread the full length of the screw, with a single slot, cruciate or Phillips head.
transfixation screw
orthopedic screw used to reattach bone fragments to a solid skeletal part. The proximal part near the head is not threaded and needs to be of a smaller diameter than the threaded portion nearer the tip.
References in periodicals archive ?
Once that setting has been accomplished and the Allen screws retightened the barrel bands and Allen screws need to be hit with Loctite 290 Wicking Grade to "weld" everything in place.
If you have removed the trigger guard alignment set screw (the little Allen screw in the back of the receiver) replace it, but do not tighten.
I had no intention of repeatedly removing the scope, so I added an Allen screw through the scope base and threaded it into the scope rail and receiver more solidly to secure the scope to the rail.
Laserlyte does not stop there as the bottom of the Sub Compact V2 accepts a small Picatinny rail, which attaches to the bottom of the V2 by sliding the dovetails of the adapter onto the mating system of the V2 and attaching with two Allen screws.
Belt Mountain provides a slightly larger pin with several choices of heads and also a locking Allen screw to hold it securely--an excellent idea and one which definitely fills a need.
I AM WRITING THIS LETTER regarding Dave Arnold's evaluation of Springfield Armory's Longslide Target Match Pistol in Handguns magazine, August 2001 Dave refers to the small Allen screw in the trigger as a "take up adjustment screw.
After that I lightly lubed the now-reduced spring with CLP (available from Midway USA) and reinstalled the spring, the Allen screw, and the lock nut.
There's also an Allen screw tension adjustment to regulate how tightly the pistol is held.
Now place the collar over the case and insert the allen screw through a hole in the collar and screw it into the hole in the case.
This can be positioned any where along the length of the underside of the barrel where it is held in place with an Allen screw.
Next, I used a number 43 drill to bore from the top down through the bolt hole and down in the side of the elevator so a 1/4-inch-long 4-40 Allen screw will go below the 1/4-inch bolt hole.