hexagon wrench
1ball end hexagon screwdriver — A tool that looks like an Allen wrench except it has a small ball at the very end. This arrangement allows it to work at various angles …
2double-ended wrench — A tool which has a hexagon ring at each end …
3Turret lathe — Hartness 3x36 flat turret lathe with cross sliding head, equipped for bar work, 1910.[1] The turret lathe is a form of metalworking lathe that is used for repetitive production of duplicate parts, which by the nature of their cutting process are… …
4Screw — This article is about the fastener. For other uses, see Screw (disambiguation). Screws come in a variety of shapes and sizes for different purposes. U.S. quarter coin (diameter 24 mm) shown for scale. A screw, or bolt, is a type of fastener… …
5Hex key — A hex key, also known as an Allen, Alum, hex head, or zeta key or wrench, is a tool used to drive screws and bolts that have a hexagonal socket in the head.Some features of this type of tool are: *The tool is simple, small and light. *The contact …
6British Standard Whitworth — (BSW) is one of a number of imperial unit based screw thread standards which use the same bolt heads and nut hexagonal sizes, some others being British Standard Fine thread (BSF) and British Standard Cycle. These three are collectively called… …
7List of screw drives — Contents 1 Common types 1.1 External types 1.1.1 Square 1.1.2 Hex …
8Pencil — This article is about the handwriting instrument. For other uses, see Pencil (disambiguation). HB graphite pencils A pencil is a …
9Area of a disk — Part of a series of articles on the mathematical constant π …
10Pi — This article is about the number. For the Greek letter, see Pi (letter). For other uses, see Pi (disambiguation). The circumference of a ci …
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