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Need Quality Tap 1/2" NPT, Thermometer Install

Remember, pipe threads are tapered and only go so far, they are not like bolt threads. Pipes tighten by the threads wedging the two tapers together. I think this is the main reason people break them off.

Turn 1/4 to 1/2 then turn back to break the curl stop when it gets tight.

Jeff
 
Brother Matt said:
If you have a good local hardware store you should be able to find one. I find that buying the right numbered drill bit for the tap is the most important step. Buy them as a set and keep them together. Oh, it looks like there isn't a numbered bit for that size, still, make sure the bit is the recommended size. Look here....

http://www.boltdepot.com/fastener-information/US-Tap-Drill-Size.aspx
Click to expand...

You're looking at a chart for regular taps, not pipe taps.

http://frentzandsons.com/Hardware References/drillsizeforpipetaps.htm
 
most home stores will have good ones. and yes, there is a way to do it and thats been explained. take care of them and they will take care of you. i still have my metric snap on set that i bought in '75 .
instead of sets, just buy what you need. sets always have taps that you never use.
 
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