Mechanics+-+Threading+a+Bolt

**Taps** and **dies** are tools used to create screw threads which is called threading.
====The process of cutting or forming threads using a tap is called **//tapping//,** whereas the process using a die is called **//threading//.** Both tools can be used to clean up a thread, which is called **//chasing//.**====

The //die// cuts a thread on a cylindrical rod which functions like a bolt.

 * [[image:TapTypes.gif width="385" height="201"]]

Bottoming, plug and taper taps
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Taps
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Tap handles
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which allow the die to be compressed or expanded.
|| Source: http://en.wikipedia.org

Follow Joe as he threads a bolt...

 * [[image:05-P1390438.JPG width="426" height="286"]]

the size of the inner core of the bolt(as if the threads were all removed).
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tap to thread the hole right through to the bottom.
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Fitting the tap into the tap handle
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 * [[image:07-P1390441.JPG width="426" height="348" align="center"]]

Turning the tap handle to thread the hole
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matching the diameter of the bolt shaft.
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 * [[image:10-P1390448.JPG width="428" height="326"]]

the bolt shaft.
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Wipe the threads with a rag to clean excess cutting fluid from the bolt.
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Remove the bolt from the bench vise - finished!
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