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Yup, same thread.
Mine came from a Halfords QR axle kit (BC discount; buying car paint the same day). Its cones measure just under 12mm at the bearing surface, so these could be used (like Andy's Instagram post above)...
I ordered the kit specifically for the bearing seat nuts, due to using a converted rear (old UG freehub model with a custom bearing insert), deciding it was better to have more surface area touching the bearing bore, since the DS bearing/insert is effectively held in by the nuts.
Couretsy of @umop3pisdn & @mdcc_tester: https://instagram.com/p/bvrrZWD_h4/
I'm part way through doing the same sort of thing on an old Spesh spoke.
Bought a track axle kit from HED for the correct bearing seats, combined with a cheap steel QR axle, tapped, from the parts drawer.