Hello. I am having a hard time finding the oem lug nut specs. I just purchased a r sport with propellar wheels and had them powdercoated black, so I am looking for aftermarket lugs but am striking out. Everyone is trying to sell me conical seat nuts which is annoying. Thanks!

 

Modern OEM Jag wheel nuts are what is called "mag seat" or flat seat, 12 x 1.5 and 19 mm hex head.
If you want some top quality one-piece black chrome Jag wheel nuts you can't go past the Gorilla ones, see here: https://www.ebay.com.au/itm/20-GORIL...UAAOSw7eldaF1U
You can also get them in chrome if you prefer, same price.
Not as cheap as some but definitely top quality, I have had them on my F-Type for seven years and taken then off and back on dozens of times now with no problems and no chipping or scratching.

 

Listen to OzXFR!
The factory sheet metal covered lug nuts are garbage! One of our highly esteemed member's call them "Spino-matic" lug nuts!
I have replaced all 20 with solid lug nuts. Stainless Steel ones are the best and do cost a bit more but it's a one and done upgrade.
.
.
.