Hi Tom.

I made a slight modification, by commenting out the next to last two lines in function buildHex(.....), of the NutsAndBolts.htm file,
which leaves the nut as a cylinder:


// var hexShape = factory( 'polygon' , frame, frame.evaluate( innerRadius, 0, 0 ), 6, true);
// object = factory( 'booleanintersection', object, hexShape );

- Brian

(Chamfer rounds off the Hex Nut, and the top of the Hex Bolt head.)

It appears that forming the inner threads of the Nut cylinder will require Boolean difference of the shank.
This would not leave any clearance tolerance for a physical Nut and Bolt.