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Sigma KEE - Screw
KB Term: 

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Screw
An AttachingDevice which contains a spiral of grooves to hold it in place and which is fastened with a Screwdriver.
Relationships      
Parents AttachingDevice A Device whose purpose is to attach one thing to something else, e.g. nails, screws, buttons, etc.


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Sigma version 3.0 is open source software produced by Articulate Software and its partners