just get your vernier out and measure the depth, the disc and the washer, allow half a mill or a whole mill so as not to bottom, stainless bolts?????
I have used them for years, but now I am having my doubts, I torque them up correctly and lock them both with Loctite and Cor Dees (RIP) suplied lock washers, but on dismantling they havent seemed "tight" leading me to think that the stainless "gives" over time, the bolt heads didnt move, since they were trapped by the lockwashers,.
comments if qualified to do so, that rules out Hamish and Nickdav7 plus a lot of others.
CLEM