M10 * 1.5 TO diameter 20 Hole..what does this means?

[jiunming]

Hi..i am doing assignment for my autocad 2002..but i have difficulty with this "M10*1.5 TO diameter 20 HOLE" which used to describe 2 cyclinders in an object. Anyone can explain to me what does it means..Thanks for help

[kencaz]

first number would be the size and the second is the pitch. 1.5 being a course pitch...

 

KC

[jiunming]

Hi KC

But, what is pitch?

[Organic]

Pitch is the angle it is leaning at. i.e. if a roof has a pitch of 20 degrees, it slopes up to the ridgeline at an angle of 20 degrees etc.

[JD Mather]

Pitch is the angle it is leaning at. i.e. if a roof has a pitch of 20 degrees, it slopes up to the ridgeline at an angle of 20 degrees etc.

 

Uhmm, not exactly in this case. Pitch is the distance from a point on the thread to the next same point on the thread. For a single thread it is also the lead, the distance the fastener would translate (advance) in one rotation.

 

This should be covered in a diagram in your textbook.

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

see Figure 5 the 1.5mm distance from one turn of the helix to the next turn.

[jiunming]

Thanks for helping:)