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  • Users: Patrick618
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  1. Patrick618

    Formula to predetermine length growth from thread rolling

    Is there a formula to predetermine the linear growth from rolling a thread? I have a part made from 4340 steel that will have a 3/8-24 thread rolled for a length of 1-3/4" and I only have .006" tolerance on the overall length which I am afraid will get longer after the thread is rolled. The...
  2. Patrick618

    18MnCr Ti material ??

    Does anyone recognize what material grade this is?
  3. Patrick618

    Drawing practice

    I have a round machined part which has 2 features that were drawn 90° apart but had no relationship or tolerance noted. One was a milled flat and the other a drilled hole. We have made many similar parts over the years and always assumed there was no relationship since none was noted and never...

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