Make A Thread

[basty]

What is the dimension of h shown in the image?

 

Any standard of it?

 

Thank you

 

[ReMark]

Well if you are referencing the British Whitworth thread then h = 0.640327 p where "p" is the Pitch. There are charts for this type of information.

 

http://www.metrication.com/engineering/threads.html

 

Pitch: The pitch of a thread is the distance, parallel to the axis, from a point on one thread to the corresponding point on the next adjoining thread. Source: Basic Technical Drawing by H.C. Spencer.

 

If you referencing Metric ISO 724 general purpose metric screw threads then use 0.614 p for the depth.

Edited October 9, 2014 by ReMark

[nestly]

That doesn't really look like a "standard" bolt size. What size bolt is it supposed to be?

[JD Mather]

Did you draw that or did someone else draw that image? (It is drawn incorrectly.)

[mikekmx]

Did you draw that or did someone else draw that image? (It is drawn incorrectly.)

 

 

what is it?

[basty]

This is the standard of the bolt.

 

 

It doesn't include the thread detail.

 

The thread has its own standard.

[smithdoor]

Today I use http://www.mcmaster.com/#screws/=uc28vp

They have dwg files of nuts and bolts in 2D and 3D

 

 

Dave

[ReMark]

basty: Looks like you forgot to read page 1 of the PDF you got that image from....

 

[JD Mather]

....It doesn't include the thread detail....

 

The information is readily available in the Machinery's Handbook and on (thousands of?) websites.

This information is usually covered in basic classroom instruction.

 

This tutorial is for a different size - but the dimensions are proportional. Once you can do one size - you should be able to do any size

http://home.pct.edu/~jmather/content/CAD238/AutoCAD%202007%20Tutorial%204.pdf

in fact, if you set up with a Parametric table (in later versions of AutoCAD) AutoCAD can create the various sizes for you.