what is a square drive screwdriver?
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The Robertson screwdriver, also known as a square screwdriver, was invented in 1908 by P.L. Robertson, a native Canadian. ... Robertson's design depended on the corresponding square shape on the top of screws that enabled the square-shaped screwdriver to make secure contact with the screw.
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A slew drive is a gearbox designed to handle radial or axial loads using high rotational torque. ... In operation, the slew drive's axial movement, or motion around its axis, interacts to create radial torque. The action occurs by meshing the grooves of the horizontal screw with the teeth of a perpendicular gear.
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Security bits and drivers are used with security screws to create a secure fastener assembly. These bits and drives feature unconventional and unusual styles that are not found in the typical driver set. They can be used wherever vandalism or tampering may be suspected.
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One of two standard USB connectors, the USB Type B connector (technically known as a “Standard B” connector) is roughly square in appearance, with a squarish protrusion on top. Type B ports are found on many USB non-host devices, such as audio interfaces, external hard drives, and printers.
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A plier-like tool designed for cutting wires is often called diagonal pliers. Some pliers for electrical work are fitted with wire-cutter blades either built into the jaws or on the handles just below the pivot.
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The genius of the Worx Switchdriver is it gives you that 2-tool combo's drill and drive convenience without the need for a second tool. If you're looking for a great all-around drill for knocking out to-do list items around your house, the Worx Switchdriver is an excellent choice.
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They have a corkscrew-shaped ridge, known as a thread, wrapped around a cylinder. The head is specially shaped to allow a screwdriver or wrench to grip the screw when driving it in. The most common uses of screws are to hold objects together — such as wood — and to position objects.
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The first kind is slotted (one single slot across the head of the screw). ... Phillips and posidrive screws are two types of crosshead screws, different from each other in that the Phillips screw head has four cross points and the posidrive screw head has a star with eight points.
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Bit ratchets are similar to compact ¼” drive ratchets with the drive style being an insert for ¼” hex bit instead of a typical ¼” square drive. They are most useful in confined space situations where it would be a challenge to use a standard driver. Bit Ratchet Showdown Candidates.
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The Phillips Screw Company and the American Screw Company patented a cross-head screw with parallel flanks which prevents the ejection force during tightening or loosening. The name Pozidriv is the abbreviation or acronym for "positive drive". Pozidriv screw symbol and screwdriver tip with parallel flanks.
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The best all-around screwdriver for the toolbox or kitchen drawer should be a ratcheting, multi-bit screwdriver with easily accessible bit storage. Ratcheting: Ratcheting screwdrivers are faster and easier to use than regular screwdrivers.
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A variable-frequency drive (VFD) or adjustable-frequency drive (AFD), variable-voltage/variable-frequency (VVVF) drive, variable speed drive (VSD), AC drive, micro drive or inverter drive is a type of adjustable-speed drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor ...
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Torx were designed to allow the screw to be tightened as far as possible. They exist because people wanted a head that would be more resistant to having the screwdriver spin out.
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TIL Why there aren't Robertson screwdrivers in the US. Robertson screws Screws (for metal or wood) with a square hole in the top rather than a straight or X-shaped one. ... They'd be popular in the States except that Henry Ford wanted exclusive rights to them, and Robertson (the inventor, a Canadian) refused to sell.
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A combination square is a tool that serves several purposes in woodworking, stonemasonry, and metalworking. It is composed of a ruler and one or more interchangeable heads that may be affixed to it. The most common head is the standard or square head, which is used to lay out or check right and 45° angles.
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Most all drills and bits are interchangeable. Of course, don't buy square shanked drill bits, though. Those are for certain drill presses, CNC's and specialty drills.
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['T8 Security Torx Screwdriver (T8H)', 'T6 Standard Torx Screwdriver.', 'Professional Non-Marring Electronics Prying Tool.', 'The very tools we at 7 Watts use to open and modify Xbox One Controllers!']