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Thread: scrounge of uncertain composition

  1. #11
    Join Date
    Dec 2016
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    Quote Originally Posted by Mike Burch View Post
    Are you sure they're not metric?

    Standard 1" threads are either 8, 12 or 14 TPI, not 13.
    Someone went nuts when everyone and their uncle calls 14TPI as UNF instead of the real 12TPI spec and compromised between them to 13 TPI

    M25x2 is probably as oddball as 1" 13TPI ie. not commonly available except from nearest lathe.

  2. #12
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    Jan 2014
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    Quote Originally Posted by MattiJ View Post
    ... M25x2 is probably as oddball as 1" 13TPI ie. not commonly available except from nearest lathe.
    Or maybe it's just unique to the crane building industry.

  3. #13
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    Quote Originally Posted by Duffy View Post
    My grandson, (the weldor,) brought me a bunch of threaded rod, all one inch, in various lengths from 7" to 24." It is used where he works to bolt cranes to truck bodies. so is definitely NOT Home Hardware threaded rod. There are two different types, with codes CD6B and B31F. One of them is apparently supplied by Fastenall, the other,who knows?
    Can anyone here shed a little more light on this stuff? It is 1"-13 according to my thread gauges, and machines beautifully.
    Did you find a nut to thread onto it? Metric or SAE? Where where they marked CD6B and B31F. paint, paper label?

  4. #14
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    Apr 2017
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    Atvthis point it's mystery freebie material..
    So don't use it on critical assemblies..

  5. #15
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    Jul 2007
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    He brought me a bunch of nuts to go with the rod, but I did not check them closely. The rods are stamped on the end with the code. I agree it is free mystery metal, but knowing the actual application, I would cheerfully substitute it for hot or cold rolled. I fortunately do not build critical assemblies, so I guess I will just use it as "round stock."
    Thanks guys!
    Duffy, Gatineau, Quebec

  6. #16
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    May 2006
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    If your not sure then just use it for stuff you build for your friends and or family...

  7. #17
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    Apr 2017
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    Richard Steel has some big cranes in that area..
    Wherever it came from,
    They could really be using that material for a wide variety of jobs..

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