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Anyone determine what the definition/properties of this bolt

  1. Jun 11, 2008 #1
    Anyone determine what the definition/properties of this bolt is???
    3/4 x 4 CS-N-LW
     
  2. jcsd
  3. Jun 11, 2008 #2

    FredGarvin

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    a 3/4-4? That's one coarse thread. It's definitely not a UN series thread. Can you tell us what context you are seeing this callout? What is it used in, etc...
     
  4. Jun 11, 2008 #3

    mgb_phys

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    Thats what I thought, is there an alternate way of specifying threads in the US? Does 4 on it's own imply MIL?

    Or it could be rebar,thats about 3/4-4!
     
  5. Jul 9, 2008 #4
    Re: Bolt

    Could it be an ACME thread? Lead or ball screws with 4 turns per inch are pretty common. The CS-N-LW could just be the manufacturer's material & finish specifications.
     
  6. Jul 9, 2008 #5
    Re: Bolt

    Do you actually have one of these or just the description? If just the description, is there any possibility that this refers to a vacuum fitting?
     
  7. Jul 9, 2008 #6

    FredGarvin

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    Re: Bolt

    I too thought about that, but, from what I saw, 3/4" starts at 5 TPI.
     
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