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Insight - How Expandable Screw Works

Written By: 

Bijal Parikh

Expandable Screw

The screw in the above image has a loop on one end known as head and the threads on the other is called shaft. The head or the loop is used for tightening the screw. Since the loop is curved and bent back in the same way as hook and resembles the shape of eye it is called “eye hook screw”. Eye hook screw forms the inner part of the expander screw and is aligned at the center with other parts mount around it.

Now we have our center part. Let’s figure out how does the size of the screw increases more than the hole?

Expandable Screw

 

If we arrange the metal plates in the above image adjacent to one another they will form a tubular structure as per our design requirement. Let’ see how?

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