Chainring bolts - why?!?!

buckmulligan Posts: 1,031
edited October 2012 in Road general
Why do all chainring bolts have this infernal slotted-back design?! I've just bought a second-hand chainset that's got a seized bolt and spent a good hour yesterday trying to get it undone; tried holding the slot with a screwdriver, needlenose pliers and even the edge of a 1.5mm sheet of steel, nothing works adequately, the slot is just too shallow to get adequate purchase.

I remember a cheap FSA chainset that I had a few years ago had chainring bolts with a 5mm hex socket on one side and a 6mm on the other, why the hell is this not standard! I'm probably going to end up drilling the seized one out, but is there anywhere I can buy double-sided hex socket ones like this? :evil: