NPT Tap Hole Depth
NPT Tap Hole Depth
(OP)
Does anyone have a chart or a reference where I can look up the minimum hole depth needed for a blind NPT tapped hole? It seems like something that should be easy to find, but I haven't had any luck. I've already looked in the Machininst's Handbook, and I want to avoid the trial-and-error approach. Any suggestions would be appreciated.





RE: NPT Tap Hole Depth
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RE: NPT Tap Hole Depth
RE: NPT Tap Hole Depth
I have a free program that displays, along with many other things, a reference tap depth for all common NPT sizes (use the Threads module of the program). I've used those numbers many times in my work, and never had a problem with going too deep.
http://mrainey.freeservers.com/MEConsultant20.html
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RE: NPT Tap Hole Depth
RE: NPT Tap Hole Depth
The program I referenced (ME Consultant 2.0) is free and contains data for all common NPT threads.
As stated in the other thread, my source was Guide to Threads, Threading, and Threaded Fasteners (Modern Machine Shop, 2004), page 262.
Sorry, I don't know of a free chart.
Manufacturing Freeware and Shareware
http://mrainey.freeservers.com
RE: NPT Tap Hole Depth
RE: NPT Tap Hole Depth
RE: NPT Tap Hole Depth