Kohler Spline Stem & Delta Handles?

Discussion in 'Shower & Bathtub Forum & Blog' started by keithwwalker, Aug 4, 2017.

  1. keithwwalker

    keithwwalker New Member

    May 21, 2012
    Portland, OR
    Wondering what the dimensions are on Kohler stem splines? (diameter)

    I already have Delta handles for my shower project (three handle retrofit).

    The diameter of the Delta valve inserts are 9mm and 7.75mm measured on the flat (where the set screw fastens).

    I believe I can use a stem adapter, but this extends the stem and that may not work

    Can I just file a flat onto the splines? Are the diameters of the Kohler and Delta stems the same?

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