Kelsey Hayes longer wheel studs

I guess I got lucky the summer before last, as I went to my local parts store and got 3 replacement studs for my small bolt kelsey hays rotors. The guy had them in a large drawer full of different wheel studs, so it seems there must be someone making them?

Getting standard 7/16 right hand thread studs for the 4 piston Kelsey Hayes disc brake system is no problem.
Those have not gone out of production by the manufacturers.