
The arbor nut size is about half the size of the original nut that came with the Milwaukee M18 mill where I lost the arbor nut. The wrench is adjustable which is a plus as the wrench that came with the Milwaukee M18 grinder will not fit these replacement nuts. The shaft nuts are about half as thin as the original nuts that came with the grinder. Spacers do not fit my coffee grinder. If you put 2 nuts on top of each other they will be about the same thickness as the original nuts. If you are looking for shaft nuts for your Milwaukee M18 Grinder, the best place to source them is from Milwaukee. This product does what it says on the tin but isn't as strong as the original Milwaukee M18 nuts.

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