I think it's M15×1.0 like most ISIS, Octalink and some HT2 crank bolts, so it might be worth offering one of those up to the problem to see if it will hold your crank on while you wait for the proper SRAM one which is matched to the cap to provide the self-extraction feature.
I think it's M15×1.0 like most ISIS, Octalink and some HT2 crank bolts, so it might be worth offering one of those up to the problem to see if it will hold your crank on while you wait for the proper SRAM one which is matched to the cap to provide the self-extraction feature.