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Interesting discovery about a Metric M6 bolt

  1. Jan 5, 2012 #1
    Today while working I found that an M6 x 1.0 Thread bold will easily screw into a hole tapped 1/4"-28.

    At first when I found this, I thought one of my boxes of bolts was labeled wrong, but I tried another set and it work.

    Has anyone else come across this similarity before?

  2. jcsd
  3. Jan 5, 2012 #2
    Yes I've noticed the same thing before, but it leaves a ton of clearance so the bolt tends to loosen up very quickly. It's not a very good idea to use the M6 in place of the 1/4-28 because of this, but it can work as a quick fix until you find the right bolt.
  4. Jan 5, 2012 #3
    Anyone who does this has a screw loose.

    (I couldn't resist.)
  5. Jan 6, 2012 #4
    Is there any other type of M6 bolt besides a metric one?
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