Ball Seat Lug Bolt questions Options

[Literati914]

I've looked at PET and it's very vague on lug bolt specs. I recall that the 2L Fuchs used a bolt that has a 40mm threaded shank with 19mm Hex - and I think R14 radius(??). But what about the VW produced Steelies (Sport steelies in my case)? I can not find length requirements - though I have some rusty lug bolts that look the part and the threaded area is only 20mm which seems kind of short. Do these wheels also require R14 radiused bolts like the Fuchs? R14 seem to be a little hard to come by- I keep seeing aftermarket sellers referencing VW as R12 instead.
I could maybe have the one I got cleaned up and chromed but that a huge hassle of course.

[Literati914]

From a post over on TheSamba:
"..mhoriuchi wrote:
R14 is correct Very Happy


Typically, the radius of a ball seat is in correlation to the stud size. So an M12 tends to be an R12 and an M14 is an R14. Oddball hybrid stuff like an R13 radius on an M14 bolts is mainly seen on newer custom wheels (usually so you have to buy their proprietary bolts).
VW had both M12 and M14 lug bolts and M14 lug nuts and the radius correlated to their size . Porsche only ever used M14 stuff on their air-cooled cars that I'm aware of and they were all R14. Porsche also shared parts with VW anywhere they could since it was cheaper (it's easy to forget how small of a company Porsche was at the time).
The lug bolts in the listing's VW part number is N0201121 (or N201121 way back when before they needed more digits). Porsche used the same part number - just for giggles I pulled 356, 911, and 914 parts books to verify. You can actually order these exact same lug nuts from both your local VW and Porsche dealerships under that part number still (but from VW they are $5.09 each while they are $11.10 each from Porsche). .."

Sorry if I got wires crossed here on this. I appreciate everyone's input and I intended my original question to be more regarding the length, thanks for the info @bdstone914 . The above quote sorts out what I'd/we'd suspected regarding radius', and confirms Bruce's post too. What was throwing me (I think) is all the options at Amazon that are M14 bolts with an R12 radius ...yeah (IMG:style_emoticons/default/screwy.gif) . Here are some examples:
https://www.amazon.com/Wheel-Accessories-Pa...C149&sr=8-3
https://www.amazon.com/Wheel-Accessories-Pa...C149&sr=8-4
https://www.amazon.com/Wheel-Accessories-Pa...C149&sr=8-5
There are many more, but you get the idea. I'm thinking that the M14 lug bolts (@ amazon) just don't state a radius unless it's something out of the norm.. so, plenty of those there too. Thanks again.