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  • Re: What grade propeller bolts

    by » 6 weeks ago


    Muray -

    There are quite a few different lock nuts (differing in height & lock system)

    Go to good nut & bolt supplier and ask what options they have to suit M8.

    AND / OR

    Check out the aviator suppliers - they have regular & low profile nuts (mostly imperial but you may be lucky)

    I used "Cone" locknuts on my Zephyr prop bolts for over 10 years and some 600 hrs, without any issues.

    After torquing apply a witness paint so that you can visually check for loosening.

    • Castellated nut.
    • Distorted thread locknut.
    • Centerlock nut. ...
    • Interfering thread nut.
    • Tapered thread nut.
    • Jam nut.
    • Jet nut (K-nut)
    • Keps nut (K-nut or washer nut) with a free-spinning washer. ...
    • Plate nut.
    • Polymer insert nut (Nyloc nut)

     

     


  • Re: What grade propeller bolts

    by » 6 weeks ago


    Thanks Sean,

    The drive lugs in the spacer are the metric M8 threaded rotax lugs the same as in the prop hub, if there is a self locking version of that would be nice but I haven't seen them listed anywhere


  • Re: What grade propeller bolts

    by » 6 weeks ago


    My Whirlwind composite ground adjustable prop just uses Nordlock washers and no locknuts of any kind, per the Whirlwind factory instructions.


  • Re: What grade propeller bolts

    by » 6 weeks ago


    Thanks James,

     

    Glad to see a propeller manufacturer using this method. I will use the same method


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