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NUTS AND BOLTS (2)
V. Ryan 2003 - 2022
 
PDF FILE - NUTS AND BOLTS - BOX LEARNING EXERCISE
 
 
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.
 
 
 
 
The diagrams below - The dotted lines show the clearance hole, through which the bolt passes. It should be slightly larger than the diameter of the bolt. As a general rule, it should be 10% larger.
 
 
 
 
 
MACHINE SCREW - ROUND HEAD
 

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.

 
 
MACHINE SCREW - PAN HEAD
 
 
 
 
QUESTIONS:
1. Draw an example of the use of one of the bolts seen above. Add explanatory notes.
 
 
 
 

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