As seen in the pics below, i need open wheel nuts but i need them to be super short. i had these ones from a set of bolt on spacers from years ago, but i need to get better ones, those ones sucked, as you can see by the rounding edges.
12 x 1.25 thread pitch.
i dont have a mic on my to measure the height, but with a tape measure they have to be shorter than 1/2" in total height
call HMS Motorsports in Boston MA and see if they have them as part of an H&R spacer setup (they sell 'em pretty regularly to the BMW / Porsche crowd but also have Nissan / honda etc fitments quite often or access to them overnight if not).