[BMWbab1]

I tried for almost two months to get this bolt from three different dealers and even got in touch with Brembo. They will not sell you this bolt. Apparently this bolt is never to be removed and when removing the brakes you are supposed to remove the caliper and mounting bracket as a whole by removing part #2 in the diagram above. I do however think you could get these bolts at a hardware dealer like Grainger. I will try to take the bolt in soon and let you guys know what I find. I agree that it is much easier to remove the hex bolt than the #2 bolts shown in the diagram. I used to crew for a race team and we always removed the hex bolts instead of the #2 bolts show in the diagram.