Thumbscrew (other)
Thumbscrew can mean: *Thumbscrew (torture), a screwed device formerly used for torture *Thumbscrew (fastener), a type of screw with a tall head and ridged or knurled sides, or a flat vertical head, intended to be tightened and loosened by hand See also *Computer case screws *Wingnut (hardware) A wingnut, wing nut or butterfly nut is a type of nut with two large metal "wings", one on each side, so it can be easily tightened and loosened by hand without tools. A similar fastener with a male thread is known as a wing screw or a wing bolt. ...

Thumbscrew (torture)
The thumbscrew is a torture instrument which was first used in early modern Europe. It is a simple vice, sometimes with protruding studs on the interior surfaces. The crushing bars were sometimes lined with sharp metal points to puncture the nails and savagely stimulate the flesh of the nail beds. While the most common design operated upon a single thumb or big toe, cunningly-designed variants of the device could accommodate, for example, both big toes, all five fingers of one hand, or all ten toes. Other terminology The thumbscrew was also referred to as thumbkin or thumbikin (1675–1685), the "kin" part being a diminutive suffix of nouns. An alternate spelling was thumbikens. The terms pillywinks and pilnie-winks were also used. Other terms may have been applied as well. Historians James Cochrane and John McCrone wrote in 1833, The torture of the ''boots'' occurs at an earlier period of our history than that of the thumbikens... Thus we read, that in 1596, the son ...
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Thumbscrew (fastener)
At a minimum, a screw drive is a set of shaped cavities and protrusions on the screw head that allows torque to be applied to it. Usually, it also involves a mating tool, such as a screwdriver, that is used to turn it. The following heads are categorized based on frequency, with some of the less-common drives being classified as "tamper-resistant." Most heads come in a range of sizes, typically distinguished by a number, such as "Phillips #00". These sizes do not necessarily describe a particular dimension of the drive shape, but rather are arbitrary designations. Slotted drives Slot Slot screw drives have a single horizontal indentation (the ''slot'') in the fastener head and is driven by a "common blade" or flat-bladed screwdriver. This form was the first type of screw drive to be developed, and for centuries, it was the simplest and cheapest to make. Additionally, it is unique compared to other common drives, due to it being straightforward to manufacture the slot h ...
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Computer Case Screws
Computer case screws are the hardware used to secure parts of a PC to the case. Although there are numerous manufacturers of computer cases, they have generally used three thread sizes. The Unified Thread Standard (UTS) originates from the United States, while the ISO metric screw thread is standardized worldwide. In turn, these thread standards define preferred size combinations that are based on generic units—some on the inch and others on the millimetre. The #6-32 UNC screws are often found on 3.5" hard disk drives and the case's body to secure the covers. The M3 threaded holes are often found on 5.25" optical disc drives, 3.5" floppy drives, and 2.5" drives. Motherboards and other circuit boards often use a #6-32 UNC standoff. #4-40 UNC thumb screws are often found on the ends of DVI, VGA, serial and parallel connectors. More modern cases from certain manufacturers ( Dell, Gateway) and enthusiast cases will lack screws altogether, instead utilizing a tool-less design ...
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