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Recent content by jjbiot

  1. jjbiot

    bore diameter in a 1/4-36 UNS-2A thread

    nobog, In the world of microwave connectors, 1/4-36 is one of the more common threads shared by 3.5mm, 2.92mm and SMA connectors. The latter may be the most ubiquitous microwave connector in the world. They are staples in the cell, web and radar infrastructure, and in virtually all forms of...
  2. jjbiot

    bore diameter in a 1/4-36 UNS-2A thread

    I was seeing this as implicitly a tolerancing question because - knowing the bore size as a function of material limits - allows me to tolerance the bore as a function of machine limits. I have never been able to separate these two (but that's just me). This is a hole in a bolt problem and the...
  3. jjbiot

    bore diameter in a 1/4-36 UNS-2A thread

    Assuming a concentricity tolerance of 0.001 inches is applied to the axis of the feature, or assuming a runout and/or position tolerance is applied to achieve the same, i.e.: all median points shall fall within a 0.001 cylindrical zone around the datum axis - how large a bore diameter do you...
  4. jjbiot

    bore diameter in a 1/4-36 UNS-2A thread

    I need to bore a hole in a male 1/4-36 threaded feature. The thread is about 0.6 inches long. The minor diameter on a 1/4-36 thread is about 0.212 inches. I need the largest possible bore. The material is 6061-T6. Question: what is the largest bore I can get away with given the 212 mil minor...
  5. jjbiot

    pin & hole slip tolerance

    Thank's much for comments. When the 0.157 (call it 4mm) pin moves over the hole it has to easily and smoothly fall into place. The force pushing on the pin is 3 to 4 ounces from the gauge, and that's the only force available to get the pin in the hole. I'm not clear on the reasoning behind the...
  6. jjbiot

    pin & hole slip tolerance

    Hi all, I need to put a turned pin into a hole. The pin is 0.157 inches in nominal diameter. I need to tolerance both the hole and pin so that the latter slips into the former under a force of 3 to 4 ounces (which is the force created by the moving stem of a Mahr-Federal dial indicator per...
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