Yes, the knobs are generated by a non-placeable macro object "faknobtype" ... called from the various cabinet parts.
To use just the knob by itself, you need to open the macro, check the box to make it be a placeable object (it then shows up in the Object Settings dialog as an object) ... and save it to your embedded library (etc).
I'll post the object next though to save you the steps... at least the macro as found in the 17 US library.
One of the forum moderators
AC 28 USA and earlier • macOS Sequoia 15.2, MacBook Pro M2 Max 12CPU/30GPU cores, 32GB