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NUTS AND BOLTS (2)

V. Ryan 2003 - 2008

 

The countersunk machine screw fits level with the surface of the wood/metal/plastic. A screwdriver is used to keep the bolt still whilst the wing nut is tightened by hand.

   

   

 

   

A plain washer prevents the nut sinking into the surface of the wood/plastic/metal

   
If there is a need to prevent A nut and bolt loosening a spring washer is used.
   
QUESTIONS:
1. Draw an example of the use of one of the bolts seen above. Add explanatory notes.
 

PDF FILE - CLICK HERE FOR PRINTABLE VERSION OF EXERCISE SEEN BELOW

 

 

 

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