Tap and die help needed - Reply to Topic
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Topic Review (Newest First)

  • 23-03-2010, 23:29
    Crank 2

    Re: Tap and die help needed

    www.tapdie.com I used them when I crossthreaded an Eldebrock intake heater thread. Very fast delivery as well...
  • 20-03-2010, 20:51
    i had a look and i have bspt but not npt (npt is the american thread) i will see if i can find one at work monday, if i can i will borrow it for you.
  • 19-03-2010, 22:02
    that would be fantastic thanks
  • 19-03-2010, 22:00
    it might be 1/4 npt, that is about 1/2" and 18 tpi. im sure i have 1/4 npt taps in the workshop, i will have a look in the morning, could pop one in the post for you to borrow (cheaper than buying one just for one hole). all it will cost is the postage and a donation to charity.
  • 19-03-2010, 16:46
    NP & NPT, or it may be NPT & NPTT, cant remember, National Pipe,& National Pipe Taper, then it may be National Pipe Thread, and National Pipe Taper Thread, havent had time to check my boxes of taps yet.
  • 19-03-2010, 11:27
    Hi V8Ian,

    1/4 NPT makes sense as my bolt size measurer would only go half way up the thread in the 1/2" hole. It's an American throttle cable with a threaded bolt attached. How do you tap out a tapered thread or is the tap the same diameter through it's whole length?

  • 19-03-2010, 01:47
    im fairly sure 1/4 NPT is 1/2"od x 18tpi, it may also be a UK conduit thread? ll have a look tomorrow and see if I have a tap
  • 18-03-2010, 23:45
    Sounds like a whit thread. Tracy tools is another or ebay?
  • 18-03-2010, 23:40
    What's it off. UK or US?

    Just had a look through my bible, and it's none of the usual ones.
    Any chance you could drill and cut a new thread such as M14?
  • 18-03-2010, 23:01
    Have you tried these?


    TELEPHONE 01422 845222
    They have an online shop and also sell on fleabay
This thread has more than 10 replies. Click here to review the whole thread.

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