Do you recognize these stainless steel nuts?

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by MrPete, Jul 12, 2025 at 12:57 AM.

  1. MrPete

    MrPete Active Member

    Joined:
    Oct 26, 2011
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    Location:
    Colorado, USA
    Vehicle:
    2011 Prius
    Model:
    Two
    I am feeling dumb (pretty common these days ;) ).

    Got my 2011 reassembled, and I have three large nuts leftover. Perhaps from something I removed, but that makes little sense as I replaced pairs of parts. See photo below.

    Any ideas? I'm cautious about going anywhere until I know what these are!
    • 15 mm head for a socket
    • Likely 8-9mm screw thread
    • nut is 15mm tall
    • wider area underneath is a little over 6mm deep
    I've tried Google photo recognition. It didn't help.

    Any pointer to resources showing Toyota (or generalized) bolts, nuts etc and what P/N they have would also be most welcome! (I'm working on such a list/data myself as well.)

    THANK YOU!
    Pete

    20250711_224413.jpg