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Spindle replacement
These are the measured sizes of the spindlenuts The measured nuts were already non-genuine replacements, so it is possible that not the original size is measured. spindel

Spindle drawing

X-as

spindle X-axis

The spindlenut of the X-axis gets seated in an recessed hole in the crossplate. At the bottomside is a round stub for positioning the nut.
X-spindle nut drawing
X-spindle nut  X-spindle nut
Y-as

spindle X-axis

The spindlenut of the Y-axis gets fastened with an M8 bolt to the crossplate.
Y-spindle nut drawing
X-spindle nut  
Z-as

spindle X-axis

The spindlenut of the Z-axis is mounted to the backsite of the horizontal millingspindle.
Z-spindle nut drawing
Z-axis nut X-spindle nut