Forum Discussion

joe_b_'s avatar
joe_b_
Explorer II
Sep 29, 2013

What kind of screw head

I was going to remove the side lights on our Rockwood 5th wheel to clean the metal ring of rust and repaint. However I quickly discovered these are not standard Torx head screws. A T20 is too large and a T15 is too small. Plus as shown in the attached photo, there are either 8 or 9, (I think it is 8) splines, where a Torx only has 6 splines. So far, the only tool I have that would remove them is an EZ Out but that will ruin the screw.

Any ideas of what the correct fastern bit is called?

  • RoyB's avatar
    RoyB
    Explorer II
    Sep 29, 2013
    Google says:

    SCREW HEAD TYPEs

    I think it is a brother-in-law thing. The manufacturer picks the brand his brother-in-law sells...

    Roy Ken
  • sue_t's avatar
    sue_t
    Explorer
    Sep 29, 2013
    My googling indicates that a Robertson bit will often do the trick on these 8-point screws.

    Same googling indicates that getting the correct bit can be costly and frustrating.

    Just google "screw head 8 point"
  • mockturtle's avatar
    mockturtle
    Explorer II
    Sep 29, 2013
    Can't answer your question but I sometimes I wonder if it's by malicious design that odd screwhead shapes are used in RVs. Would there be anything wrong with using standard shapes? I have replaced more than a few of mine. PS: I do have a drill bit that shape but not sure it's the same size.

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