Sometimes Hitachi also go for non-generic sizes. One saw I have has an unusual mandril size, and I have to buy 1mm bigger and centre-punch tits into it to make it 'centre.'
My only Craftsman tool is a portable table-saw. It was bought new in South Africa by a builder, who used it until he retired in New Zealand, and I bought it from his heir ten years ago. No idea how old it is, but OLD. And good, apart from the cast-monkey-metal controls, which are breaking one-by-one.
Will they really replace broken parts FOC? Must try.