I want to see a pic of one that does not have splines.
see, now it comes back to me....
I only remember in 1963 ,installing a wooden steering wheel in my mini cooper, using a cresent wrench (wth , I was 18! lol) for the nut....it came off...about a year later while I (luckily) was on the freeway doing about 110.....I HAD rallyed that car earlier! its tense moment trying to get that wheel back on the splines at that speed! lol