Steel bolts and nuts for Ultima Matrix mounts?

[Ice_Dan...@yahoo.com]

The now discontinued Jackson Ultima Matrix mounts (for removable
figure skating blade runners) held the runners using soft (aluminium?)
bolts with tiny (roughly 3 mm) hex drive heads, that wear out very
quickly.

Replacements can still be ordered from Jackson Ultima (unlike the
blade runners which can not :-) - good thing I ordered the last blades
Jackson had in stock of my size), but they would wear out quickly too.

I am interested in finding harder bolts and nuts that will fit. Say
stainless steel or titanium (something rust resistant).

I believe it uses a standard 10/32 thread and a tapered head, but
something a little smaller or larger would fit through the whole in
the frame too.

The hard part is the nuts, which are a rounded square shape. They fit
into insets. A standard hex shaped 10/32 nut might fit if I rounded it
off with a grinder, but that is too much work.

Has anyone found anything that works?

And BTW, is anyone else making replacement runners? I've tried
encouraging a machinist, but no result yet.