Some Graf figure skating blades are very expensive, yet, AFAICT from pictures and a brief phone call to Graf/Canada, none of them have countersunk holes. (A countersunk hole has an inverted cone shape at the top of the hole, that meshes with the cone shape at the top of a suitable countersink-head screw. Countersinks firmly lock a mounting plate to the base [in this case the outsole] in a specific horizontal position.)
Since screws generally have a significantly smaller diameter than the hole, a lack of a countersink means that if the screw comes even a little loose, the blade could shift horizontally, creating problems for the skater.
Are there any other high level blades that make this mistake?
Have I got this wrong? E.g., do the Graf mounting plates actually have threaded holes that the threads of the screw fit into?
Many low level figure skating blades aren't countersunk either - but I think they are meant to be held in place by rivets which are the same diameter as the hole.
P.S.: I'm not sure if my use of the term "screw" is correct. Based on catalog pictures, Graf screws are technically bolts, because they aren't self-tapping.