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Thread: measurement questions

  1. #1
    DIY Junior Member Daniel Bigdan Frazier's Avatar
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    Default measurement questions

    20 x 17mm 4/5" x 43/64

    I've researched how to divide this formula up to better understand and know each dimension and what each measurement corresponds with but the only part i understand is 4/5 is the outside diameter.

    so can yall tell me how to break this up piece by piece?
    redneck engineer

  2. #2
    DIY Senior Member Reach4's Avatar
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    Nobody is going to figure out what you are asking from this posting. I only figured that out from your other posting that was a little more coherent, and where you got useful info: take it to the store and see what thread fits.

  3. #3
    Jack of all trades DonL's Avatar
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    Quote Originally Posted by Daniel Bigdan Frazier View Post
    20 x 17mm 4/5" x 43/64

    I've researched how to divide this formula up to better understand and know each dimension and what each measurement corresponds with but the only part i understand is 4/5 is the outside diameter.

    so can yall tell me how to break this up piece by piece?

    Your measurement conversion is off a bit.


    20 mm = .7873992 inch (4/5" = .80 inch)

    17 mm = .6692893 inch (43/64" = .671875 inch)


    What are you having a problem with ?
    Theory only works perfect in a vacuum.

    Cyber Security Protection for Windows C:\ > WWW.WinForce.Net

  4. #4
    Test, Don't Guess! cacher_chick's Avatar
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    Plumbing pipe fittings are standardized. You are working to hard at being an engineer instead of just getting the job done.

  5. #5
    Jack of all trades DonL's Avatar
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    Very few Metric sizes will come out being a even fraction in inches.

    The USA was going to go to metric, But I never seen it happen, but we did learn it in school.

    China parts do not match US made parts if you get your Micrometer out and measure.


    Have Fun. Were is the other thread ?
    Last edited by DonL; 02-23-2014 at 11:58 AM.
    Theory only works perfect in a vacuum.

    Cyber Security Protection for Windows C:\ > WWW.WinForce.Net

  6. #6
    Moderator & Master Plumber hj's Avatar
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    quote; the only part i understand is 4/5 is the outside diameter.

    That is the only dimension you need to know. Your faucet has a 20 mm outside thread so you need a 20 mm to 1/2" ips female adapter, then you can convert to your hose thread from that.
    Licensed residential and commercial plumber

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