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Calling a thread depth on a taper pipe thread is an error. The spec of the thread determines the depth. You have the gauge, right?
It looks like some one relied too much on their Cad program fo the call out . I believe the NS means near side so it’s gonna be a blind hole . As to the depth refer to machinist hand book .Depending on the hole depth you may have to cut the tap back to get it to gage properly. If you don’t have a gage you can use a fitting count 3 turns plus or minus 1/2 and you should be fine.
Pete
I am going to buy one right now, I don't have them for NPT stuff. Is using them the same?
what does "tap drill thru NS only" mean?
Could NS = Near Side?
Dave
Depending on the hole depth you may have to cut the tap back to get it to gage properly.
Pete
That z depth won’t work with a NPT tap
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