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Socket wrench. Lever with interchangeable socket heads to grip or turn a bolt or nut. Socket set with ratchet (above), four hex sockets and a universal joint. A socket wrench (or socket spanner) is a type of spanner (or wrench [1] in North American English) that uses a closed socket format, rather than a typical open wrench/spanner to turn a ...
Early tool sets consisted of hex drive sockets and an ell bar for the drive tool. Beginning in the 1930s, the None Better line consisted of a wide variety of 1/2 square drive tools with a Cadmium finish. At this time, New Britain Machine was also supplying tools for Sears in their Craftsman line of tools. These tools are easy to distinguish as ...
P. L. Robertson. Illustration from the 1909 Canadian patent for the Robertson screw. Peter Lymburner Robertson (December 10, 1879 – September 28, 1951) was a Canadian inventor, industrialist, salesman, and philanthropist who popularized the square-socket drive for screws, often called the Robertson drive. Although a square-socket drive had ...
List of screw drives. 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. [1][2] Usually, it also involves a mating tool, such as a screwdriver, that is used to turn it. Some of the less-common drives are classified as being "tamper-resistant".
This 243-piece set comes with a full slate of metric and SAE sockets with 1/4-inch, 3/8-inch, and 1/2-inch ratchet drivers. There’s also a bit driver with assorted bits and a set of box wrenches.
Robertson screw. A Robertson screw, also known as a square screw[1] or Scrulox, [2] is a type of screw with a square -shaped socket in the screw head and a corresponding square protrusion on the tool. Both the tool and socket have a slight taper. The contemporary square drive screw has all but replaced the Robertson screw proper and is commonly ...
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3579 S High St, Columbus, OH · Directions · (614) 409-0683northerntool.com has been visited by 100K+ users in the past month