Can anyone recommend source for miniature, (2-56), threaded dowel pin?
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  1. #1
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    Default Can anyone recommend source for miniature, (2-56), threaded dowel pin?

    Looking for a US-based source for small threaded dowel pins. Ideal would be a 3/32 pin, OAL 0.625 which would include ~0.125 of the end threaded to 2-56 and the opposite end slotted.

    Worst case I could buy shouldered screws from McMaster and turn the head down but they want $3.00-$4.00 each which seems high to me, not to mention the machining time.

    Quantities at this time are only 25-50'ish.

    Thanks.
    gm

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    I don't think you can call it a dowel pin once the threads are on it. Maybe call it a threaded indexing pin or a threaded locating pin will help the search

    is this the kind of thing you are after?

    threaded_dowel_pins_9222_3.jpg

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    Quote Originally Posted by Kevin T View Post
    I don't think you can call it a dowel pin once the threads are on it. Maybe call it a threaded indexing pin or a threaded locating pin will help the search

    is this the kind of thing you are after?

    threaded_dowel_pins_9222_3.jpg
    Yes Kevin, that's exactly what I'm looking for. Thank you.

    I've tried searching for that and I'm having trouble finding one "off-the-shelf". My guess is that it will have to be custom given the small size.

    gm

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    Shoulder screws (by default) are not nearly as precise in size as a dowel pin. Even looking at "precision" shoulder screws/bolts from McMaster the dia tol is listed at _.001/+0. Does that still work for your application?

    I am thinking you will either need to have them custom machined, or 'settle' for a shoulder screw and turn the head off. I agree though, $4 each for 50 parts PLUS the labor kind of stings.

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    Quote Originally Posted by Mike1974 View Post
    Shoulder screws (by default) are not nearly as precise in size as a dowel pin. Even looking at "precision" shoulder screws/bolts from McMaster the dia tol is listed at _.001/+0. Does that still work for your application?
    Yeah... The tolerance is not an issue. I found another company that has a much better price: Socket Head Shoulder Screw | Hex Head Shoulder Screw. Worst case I turn the head down myself but I plan to check with them next week to see what the cost would be if they turn it off for me.

    Thanks.

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    They are very like the threaded pin on the backgear ring on top of a Bridgeport mill.

    Try a search for Slotted Set Screw Partially Thread.

    Something may come up.


    Slotted Set Screw, Partial Thread | Metric Screw & Tool

    Buy Slotted Head Part Threaded Set / Grub Screws | 500,000+ Components | Accu(R)

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