Allen screw

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Related to Allen screws: Allen wrench

Al′len screw`

a screw turned by means of an axial hexagonal hole in its head.
[formerly a trademark]
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
References in periodicals archive ?
The Hoptic quiver has small Allen screws on the underside to control tension on each individual round.
Aesthetic nods to the sport of cycling abound: the crown resembles a bicycle pedal, and tiny Allen screws affix the timepiece's bridges.
All single parts are fixed with standard Allen screws and can be deployed easily for installation, maintenance and calibration purposes," explains head of Lufft development Axel Schmitz-Hubsch.
It was easy to swap out the factory knob with the Custom XR simply by loosening three small Allen screws, removing the factory knob and installing the Custom XR.
Unfortunately, unlike an AR15 or AR-10, the two halves are secured by heavy Allen screws as opposed to simply pushpins.
At the rear of the slides of MOS pistols is a metal cover retained by two Allen screws.
An advantage to this clamshell design is slightly loosening the Allen screws allows the sight housing to be moved right or left to allow no-wind zero (where the bullet hits when conditions are dead calm) and mechanical zero (where the rear sight is dead center in the middle of its left to right travel) to coincide.
Two Allen screws secure the rear sight in its dovetail, allowing lateral movement.
The rear sight is secured with two Allen screws, and can be laterally adjusted in its dovetail.
Connections are fastened to the profiles by means of locking plates that grip into the grooves and clamped together with Allen screws.