Drawing Orthogonal Nuts, Bolts, and Washers (1 Viewer)

[flying_dragon]

When drawing nuts, bolts, or washers in an orthogonal representation, what are the conventions/standards that must be followed? I know there's a certain width and stuff it has to be for a certain diameter hole, but how is this determined? I have my Trial HSC Engineering exam in a little over 3 hours, so plz HELP!!!

Also, can anyone help me with the conventions for drawing screw threads?

Thanks for any help i can get...

 

[fakingtheday]

Sorry i'm about a week late but none the less. A metric bolt is demnsioned like so you are given the following:

M[Diameter] x Thread, length, soemtimes they will give you the thread length or you can use your own disgretion here.

Here it is in dodgy paint form: (PS i forgot to put faces on the nut but you should be able to get the jist of it.)

 

[Mat_Aussie]

Hey,

i got my trial for engineering tomorrow

for screw threads on orthognals, you draw 2 parrallel lines, not diagonal lines across the shaft which many people do. remember the 45 degree bevel on the end of the thread/bolt

 

[fakingtheday]

sometimes you do, usually you section a thread if told to section the drawing.

 

[SDuke]

Are u sure u can section the thread? I thought wit nuts and bolts u cant section at all...

 

[richz]

yep agree, u dont section bolts and nuts

 

[fakingtheday]

no i didn't say you section nuts and bolts. But there are certain times when you section the thread. Trust me.