M14x1.5 TAP query

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  • mcandmar
    S2Forum Zealot
    • Apr 2004
    • 5118
    • Country: Ireland

    #1

    M14x1.5 TAP query

    I need to clean up a few threads on my hubs. One on each hub so i assume the previous owner had a set of locking bolts the wrong thread.

    Can somebody please explain this first tap, second tap, plug tap, and taper tap difference to me. Which is most suitable to clean up an existing thread?

    Thanks,

    Mark.
    91CQ20v - Gone to a new home
    93UR-S4 - The Magic Carpet
    94S2Bus - The Emerald Express
  • AndyP
    S2Forum Zealot
    • Feb 2004
    • 6049
    • Country: England

    #2


    Top one is a first, middle is a second, bottom is a plug. If your tapping a hole from scratch, you start with the first as it's got a bigger taper and makes it easier to get started. The plug tap is used for tapping all the way to the bottom of a blind hole. For your purposes you can use a second or a plug. I bought one off Ebay the other day for exactly the same use.

    http://cgi.ebay.co.uk/ws/eBayISAPI.d...m=310111762658
    sigpic
    1991 Audi S2 3B - 2.5 Stroker engine
    1997 A6 2.5TDi quattro avant - C4
    1976 RD250E / 350LC cafe racer

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    • mcandmar
      S2Forum Zealot
      • Apr 2004
      • 5118
      • Country: Ireland

      #3
      Perfect, thanks Andy!
      91CQ20v - Gone to a new home
      93UR-S4 - The Magic Carpet
      94S2Bus - The Emerald Express

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