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What size geometric die head?

According to Geometric catalog 77-1, 1/2 NPT is the largest pipe thread you can cut with a 3/4D head. Of course, the 1D and 1-1/4D heads will work and are larger/heavier. The 1-1/4C heads will also work. And Geometric made a special CT head specifically for cutting taper pipe threads, but I have never seen one.

Larry
 








 
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