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Fine pitch Threads Aluminium

  • 18-08-2017 1:29pm
    #1
    aidanki
    Registered Users, Registered Users 2 Posts: 1,283 ✭✭✭


    I have an aluminium fixture in which I want to tap a M5 hole.

    What is the finest pitch of M5 thread that is realistic for aluminium, its v easy get taps with a smaller pitch than the M5x0.8 standard.

    The standard M5 is M5 X 0.8.

    Ideal situation would be to helicoil my fixture with M5x0.4 helicoil but I don't think such a thing exists.

    M4 would also be an option but the standard M4 is M4x0.7


Comments

  • #2
    dev100
    Registered Users, Registered Users 2 Posts: 1,002 ✭✭✭dev100


    Why do you want to go finer ?


  • #3
    Turbulent Bill
    Registered Users, Registered Users 2 Posts: 1,638 ✭✭✭Turbulent Bill


    dev100 wrote: »
    Why do you want to go finer ?

    Ditto, can you give some detail on what you're trying to achieve?


  • #4
    CJhaughey
    Registered Users, Registered Users 2 Posts: 14,907 ✭✭✭✭CJhaughey


    I am not sure any insert is available with finer than M5 x 0.8 which is already a fine pitch. You could look for Rivnuts or Timeserts but again I am not sure they are available in any pitch less than 0.8 in M5. The type of aluminium that you are tapping will also have a bearing on what thread size you can use.


  • #5
    dev100
    Registered Users, Registered Users 2 Posts: 1,002 ✭✭✭dev100


    Turbulent Bill wrote:
    Ditto, can you give some detail on what you're trying to achieve?

    I'm nearly 20 year in the game I'm all right on my choice of threads :)


  • #6
    Turbulent Bill
    Registered Users, Registered Users 2 Posts: 1,638 ✭✭✭Turbulent Bill


    dev100 wrote: »
    I'm nearly 20 year in the game I'm all right on my choice of threads :)

    Sorry, that was supposed to be directed to the OP; I was agreeing with you!


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