AutoCAD 2D, how to draw bolt and nut, autoCAD training part1

ES: in this video show how to drawing bolt and nut in 2D by used command such as command c, command pol, command d, command pl command tr, command h, ...
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[@RaviSingh-sk4jx]

Sound to dal na tha
Video acha tha

[@markopantic6938]

Nice video. People can learn from this video, but mechanicly it is wrong :p

[@dtriniboss]

Bolt's hexagonal head CAN'T be the size of a circle circumscribing the hexagon. If that is the case then the bolt head is circular rather than hexagonal. Therefore it DOESN'T have any flat sides.

[@rocelyngamon1085]

Better with sound.

[@SuperSharpboy]

I'm sorry but how are you planning to join the nut and the bult together? I might be wildly wrong but I thought the whole purpose was to have helical threads so the two parts could possibly be joined.