Allen screw

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Related to Allen screw: Allen key, Allen head

Al′len screw`

a screw turned by means of an axial hexagonal hole in its head.
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Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Allen screw - a screw with a hexagonal hole in the headAllen screw - a screw with a hexagonal hole in the head
screw - a fastener with a tapered threaded shank and a slotted head
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References in periodicals archive ?
On the bottom of the foreend is a recessed Allen screw. Insert the wrench, half-turn the screw, then slide the fore-end straight off the front of the rifle.
A single Allen screw holds the riser on the machined aluminum barrel.
The device is a rotating cylindrical body that is screwed into the mold and can be set to any desired position by means of an Allen screw. The toolmaker machines the melt flow paths into the body so that turning the body opens or closes off the melt channels as desired.
Lift the handle, pry off the decorative cover with your fingernail or a flat-blade screwdriver, then loosen the Allen screw underneath and lift the handle free.
We, however, lay drained and demoralised at its feet, with one remaining Allen screw boring a hole in our nerves.
Start by using an Allen screw to remove the small set screw located on the bottom of the receiver near the front.
On my pistol, I didn't have to loosen the little Allen screw and move it.
We can't loosen the Allen screw to remove the handle from our rotary ball faucet.
If you want to take the rifle completely apart, you pull the ramrod and undo a single Allen screw in the stock, freeing the barrel.
Adjusting the letoff is as easy as loosening the Allen screw on the cam module, rotating it to the desired position and changing the position of the draw stop peg.
It is accessible without being obtrusive and is easily removed with a single Allen screw if its presence is unwanted.