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  1. #1
    Join Date
    Jul 2010
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    Default Some oddball taps wanted

    Hi..
    Due to the success of my previous post... I thought I might try again..

    8-36 NF tap

    1/8 BSF tap and die.

    1/8 UNF tap and die

    Ken.

  2. #2
    Join Date
    Aug 2008
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    near Rockhampton
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    5,646

    Default

    1/8 BSF does not exist according to the few thread charts I found online. It starts at 3/16. Unless it is a really old thread that pre-dates modern thread charts.
    Gold, the colour of choice for the discerning person.

  3. #3
    Join Date
    Jul 2010
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    Default

    I thought I may have trouble with that one !... i found a reference to it with 48 tpi..
    But then again 1/16 and 3/32 BSW don't show up on charts nowadays either.
    Ken

  4. #4
    BobL is offline Member: Blue and white apron brigade
    Join Date
    Feb 2006
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    Default

    Quote Originally Posted by kenny_10 View Post
    I thought I may have trouble with that one !... i found a reference to it with 48 tpi..
    But then again 1/16 and 3/32 BSW don't show up on charts nowadays either.
    Ken

    The tables in the back of Tubal Cain's book of drills taps and dies shows 1/16 and 3/32 BSW
    But
    BSF's start at 3/16", UNFs start at 1/4"

    There is a table of "specials with a Whitworth form" for model engineers which shows 1/8 available in 40 (same as BSW) and 60 TPI.

    8-36 is listed.

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