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How are shaft couplings sold?

  1. Mar 15, 2015 #1
    When a coupling is described as being 6.35 mm x 12 mm, what does this mean?

    I figure that 6.35 mm is the shaft diameter it accepts because that diameter equals 1/4". Is 12 mm the size of shaft the opposing side is designed to attach to?

    Thank you in advance.
  2. jcsd
  3. Mar 15, 2015 #2


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