I encountered the same problem yesterday. I went to an ACE Hardware and they had the most complete assortment of bolts I have ever seen and nothing was the correct size. Apparently ,they used a 12/28 which maybe the most rare thread there is. Why???I'm installing some rear corner armor on my rig and the bolts that came with the OEM lights aren't long enough to work anymore. I went to the auto parts stores and they've got nothing that will match the threads, was wondering if anyone had any solutions for things they've done, I'm sure this problem has been ran into before.