thumbscrew


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thumbscrew

1. an instrument of torture that pinches or crushes the thumbs
2. a screw with projections on its head enabling it to be turned by the thumb and forefinger

thumbscrew

[′thəm‚skrü]
(design engineering)
A screw with a head flattened in the same axis as the shaft so that it can be gripped and turned by the thumb and forefinger.

thumbscrew

A screw having a broad head that is knurled or flattened so that it may be turned easily by the thumb and one finger.
References in periodicals archive ?
Indeed, Turning the Legislative Thumbscrew is a remarkable piece of scholarship precisely because of the author's talent in aggressively testing his model in a number of different institutional settings.
Keeping firm forward pressure on both the measuring rod and metal stop, tighten the thumbscrew on the metal stop.
I eventually fashioned a small, cylindrical plug, inserted it into the thumbscrew hole, put the screw back in, and tightened it down snugly until the friction felt right.
However, my no-nonsense interview technique - and the application of a thumbscrew - eventually results in a more believable answer from the Hall Green-based author.
The base includes a support-rod mount with a thumbscrew for rods up to 13 mm in diameter.
A small thumbscrew allows precise positioning of the tip spacing.
The amount each tooth is bent is adjusted by turning the thumbscrew in or out.
Thumbscrew sight glass fasteners provide solid lockdown and fast "no tools" horizontal adjustment.
While the hydraulic pressure temporarily secures the mold, a manual thumbscrew mechanically locks the clamp in the closed position so that the hydraulic power can then be released.
S-5026r -RIOT Faceshield-(Clear) Shall Have Full Flip Polycarbonate With Neoprene Rubber Liquid Seal-Attached With Thumbscrew And Spring Steel Clip.
M16A2 thumbscrew kit (includes thumbscrew, washer, special washer, and O-ring), NSN 5305-01-559-3863