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IndustryArena Forum > MetalWorking > MetalWork Discussion > need pitch for 1 3/8-18 thread

Thread: need pitch for 1 3/8-18 thread

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  1. 04-20-2011, 02:06 AM #1
    Nastyzen
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    need pitch for 1 3/8-18 thread

    Hi there. I'm Bozoing on this. I forget the formula to get the pitch,the distance between the threads.
    The thread is 1 3/8-18. Looks around .o50 or so.
    I'm going to attempt to thread mill on my cnc mill for the first time.
    Thank's
    Zen
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  2. 04-20-2011, 03:28 AM #2
    Geof
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    18 thread in 1 inch therefore distance between each turn is 1/18".

    0.0556" to four decimal places
    An open mind is a virtue...so long as all the common sense has not leaked out.
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  3. 04-20-2011, 03:41 AM #3
    Ken_Shea
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    ME Consultant Pro output
    Attached Thumbnails Attached Thumbnails 138x18.jpg  
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  4. 04-20-2011, 01:57 PM #4
    Nastyzen
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    Thank you gentlemen!:banana:
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  5. 04-20-2011, 02:08 PM #5
    RD Toolmaker
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    the pitch equals the number of thrds per inch diveded into 1

    RD
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  6. 04-21-2011, 04:36 PM #6
    djr76
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    1 divided by tpi
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