How to model screw with dia. increases

[foolmankh]

<DIV>Hi All,</DIV>
<DIV>I'd like to model screw like this picture with dia. that increases by pitch.</DIV>
<DIV>Could someone show me the way to do this?</DIV>
<DIV>Thanks in advanced.</DIV>
<DIV></DIV>
<DIV></DIV>

 

[m-d-e]

You can do that with helical sweep. Simply choose variable instead of constant and the rest is selfevident.