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Thread: I need some nuts

  1. #21
    Join Date
    Dec 2016
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    Helsinki, Finland, Europe
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    Quote Originally Posted by MrWhoopee View Post
    I have had to make some similarly fine threaded nuts recently. I grabbed a broken tap and ground away all except the first good tooth. It made a great threading tool. Perfect form and much easier than trying to make one from scratch.
    This is what I have also used. Small internal boring bars for holes like under 1/4" are not so well suited for toolbit+setscrew but 1/2" 32tpi thread is already workable size in my books.

  2. #22
    Join Date
    Oct 2012
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    San Antonio TX, USA
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    Quote Originally Posted by Dave C View Post
    In box is full
    oops, sorry. Checked the ones I have and the only 32tpi one I have is 15/32. Threads ok onto a 15/32-32 Judco switch, has a minor ID of 0.454", so doesn't look like it'll work for you.

  3. #23
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    Apr 2017
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    Kelowna BC
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    Maybe you can cast a nut for it from some quick set plastic ?

  4. #24
    Join Date
    Oct 2013
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    USA MD 21030
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    5,233

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    I found the data sheet for the T11-4 breaker, and it is 1/2"-32:

    https://www.alliedelec.com/m/d/a9d21...27f67b9dbf.pdf

    Airpax is now Sensata.

  5. #25
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    Jan 2003
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    On the Oil Coast,USA
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    Quote Originally Posted by Dave C View Post
    I hadn't thought of going that route, and may give it a try. My problem was not with single pointing the thread, it was the pita of having to make a tool to cut the thread inside that small hole.
    Do like I have done in the past and use a 10-32 tap for a threading tool.
    I just need one more tool,just one!

  6. #26
    Join Date
    Mar 2015
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    Central Ms
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    Digikey has ordered the parts and they should be here in another week. Had to pony up another $2.76, but they waived the shipping fee. Good thing I have a lot of other work to do to the mill before I'll need the power feed.
    “I know lots of people who are educated far beyond their intelligence”

    Lewis Grizzard

  7. #27
    3 Phase Lightbulb Guest

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    Dang-it, wrong kind of nuts....


  8. #28
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    Apr 2017
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    Kelowna BC
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    You are what you eat... you walked right into that.l

  9. #29
    Join Date
    Mar 2015
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    Central Ms
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    Even though the nuts are supposed to be here in a few days, I couldn't resist tying to make one myself, just to see if I still had the knack in me. I used a 1" hole saw to cut these out of a piece of 1/4" thick aluminum angle I found in the scrap pile. No idea what the alloy is.

    Looked in dad's Machinery's handbook that's a year younger than me, and found the thread depth of a 32 tpi thread to be .0203". The thread OD is .490, Chucked one disk in the lathe and drilled 29/64 hole, and used a tool that I forgot I had, and found while looking for something to cut the thread with. It's from a mini set that I bought years ago. Those are 1/4" shanks.





    The thread turned out kinda rough, but cleaned it up with a dental pick.


    I knurled it just for grins, but it didn't turn out the best. I think the stock is some crappy, gummy alloy.



    Too big to fit where it goes, so made it square with the minin mill. The corners need to come off too.

    It's not pretty, but at least it will do to hold the breaker in place while The servo is wired up and reassembled.
    “I know lots of people who are educated far beyond their intelligence”

    Lewis Grizzard

  10. #30
    Join Date
    Apr 2017
    Location
    Kelowna BC
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    Yup crappy gummy aluminum.
    Get some 1 inch or 3/4 6061 bar stock....handy to have around.
    K
    Turn od, then knurl, then thread and part off

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