The front sprocket nut and washer saga

[Foxwood]

Doesn't matter really as the nut has held. Mine was visibly loose and only the locking washer was holding the sprocket on. I'd still recommend acquiring the new nut when changing the sprockets next time. Doesn't look like the nut is flush with the axle end as the new nut is, so could be that's still the old nut type. Only measuring the thickness would tell for sure. 9 mm -> old nut and 12 mm -> new nut.