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Welding & Fabrication Forum
First time drill and tap, not sure
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[QUOTE="06_Whitebull, post: 858353, member: 7022"] I'm doing some extra mods while I have my truck apart, and one of them requires drilling and tapping for a 3/8 npt fitting. I am using a piece of scrap metal for practice as this is the first time using it. I followed the chart in the tap and die set, drill a 9/16 hole, and use the corresponding tap. However, when I go to screw in the 3/8 NPT fitting it started getting tight at half a turn. I ran the tap 2/3 of the way in so I know it's deep enough. When I backed the fitting out it looks like the tapped hole is flattening out the threads on the fitting. [ATTACH]24333._xfImport[/ATTACH] Is this right or am I missing something? [/QUOTE]
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First time drill and tap, not sure
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