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  • Users: Emo01
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  1. Emo01

    Realistic straightness callout on turned threaded bar.

    Thanks for the replies. It is to be a one off (or low vol. at least) and is part of a precision assembly. It will be used to wind a dowel in and out, hopefully the clearance in the threads will be greater than any variation in straightness and concentricity etc. however I feel I want to...
  2. Emo01

    Realistic straightness callout on turned threaded bar.

    I am looking to get a piece of bar turned with two threads of different pitches (differential screw), there is to be an M8 and M10 thread and the piece is to be 90mm long. Am I right in thinking run out cannot be specified as it threaded? I want it to be very straight without specifying...
  3. Emo01

    Clearance/movement between internal external threads

    Hi I have a design where I have one dowel and one threaded hole. I want to work out what the tolerance on the centre distance needs to be so I need to work out how much the screw can move in the hole, as the part is being wound up and down (adjusted) on the screw. I know this is different...
  4. Emo01

    Tolerance on centre distance between two dowels

    Hi I am looking a two dowels separated by a distance D which must match up with two holes on a corresponding part. The fit between the dowel/hole is to be a H7/g6 close sliding fit. The max shaft diameter under this spec is 9.995, the min hole diameter is 10.000 under this spec. Surely...

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