dowel pin

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The impeachment trial of Pres. Andrew Johnson, illustration from Frank Leslie's Illustrated Newspaper, March 28, 1868.

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dowel pin

tool

Learn about this topic in these articles:

fastening device

In pin fastener
Hardened and precisely shaped dowel pins are used to keep machine components in accurate alignment; they are also used as location guides for adjacent machine parts and to keep the two sections of a punch and die in alignment.
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