9/16 wheel studs

[Budweis]

anyone know where i can get some 9/16-20 wheel studs. unfortunately the only auto parts store anywhere around here is o reilly and they are brain dead. i went in and told them what needed and said they were for the front of a 72 k20 and they said they dont exist , that there is no number for and they cant get and that ill prob have to have them custom made. needless to say i left. i know for a fact that it cant be that hard to find but now looks like gonna have to find online or i guess ill have to wait till make a trip to st louis to a real auto parts store. id like some with a long knurl and that measure somewhere around an 1 1/2" from the back to start of the threads and somewhere around 3" for total length. went to another parts store like 60 miles away today and they told me that dont have either that have to go to arp fasteners but they dont carry either i just checked there. my truck must be rarest truck in the world cus i cant ever find anything for this piece @#$% lol