 Create the thread model
(click here to build)
Click on  and Project
Open EngineeringNut and BoltNut Top
Draw the nut top
 Draw  a circle and a hexagon for the top of the nut in lines 
as illustrated...
Draw triangles
Draw triangles 
for the top of the nut as illustrated...
Press Save to save the model
(click here to go back)
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