External Threading - CNCzone.com-The Largest Machinist Community on the net!

skipper · #1 10-26-2007, 04:29 PM

Hi All,
I see a lot of charts for drilling holes to thread with a tap. What I am looking for is a chart for doing external threads on rods. Example: If I want to make a ¼-20 thread, what diameter should the rod be turned to do this? I a sure there must be a chart for this?

Thanks,
rene

Andre' B · #2 10-26-2007, 05:26 PM

http://www.efunda.com/DesignStandard...ws/unified.cfm

Does anyone read the Machinery's Handbook cover to cover anymore?

skipper · #3 10-26-2007, 07:49 PM

Thanks,
That is the info I needed. I am not advanced enough to know what to do with a Machinist Handbook.

Mcgyver · #4 10-26-2007, 08:44 PM

we can help with that to....open the cover, start at the top left corner, read left to right and down the page. consult index when required

.

cdlenterprises · #5 10-26-2007, 10:19 PM

Not enough pictures though....

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