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A split pin (UK usage) / cotter pin (UK/USA usage) holding a rod in place with a washer. A split pin, also known as a cotter pin, or cotter key in the US, [1] is a metal fastener with two tines that are bent during installation, similar to a staple or rivet.
The "correct" procedure is to decide upon one's move, then remove one stone from the bowl and place it on the board. This produces the minimal amount of distraction for one's opponent. When removing a stone from its bowl to make a move, place a flat hand on the edge of the bowl, with the fingers gently entering the bowl.
The whole board opening is called fuseki. [1] An important principle to follow in early play is "corner, side, center." [2] [3] [4] In other words, the corners are the easiest places to take territory, because two sides of the board can be used as boundaries.
A threaded fastener for joining two male threads, most commonly a threaded rod,[1][2] but also pipes Flange nut: Collar nut Has a wide flange at one end that acts as an integrated washer HARDLOCK Nut [3] Eccentric Double Nut A self-lock nut. Improvement of the double nut that uses a wedge principal, eliminating space between threads. Insert nut
For fastening flat-bottomed rails, an upper-lipped washer can be used to grip the edge of the rail. They are more resistant to loosening by vibrations and movement of the rail. [21] They are thought more effective than spikes and screws and so are used in positions such as switch (point) tieplates [22] and on sharp curves. [23]
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A retaining ring is a fastener that holds components or assemblies onto a shaft or in a housing/bore when installed - typically in a groove - for one time use only. Once installed, the exposed portion acts as a shoulder which retains the specific component or assembly. Circlips are a type of retaining ring.
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