The number you gave, 6041H105A is a Cutler-Hammer number.

The planes all use variants of this. The differences are things
like the diameter of the stud bolts.

BTW, as these age the phenolic tends to shrink. The stack
of nuts gets loose.

I've had some luck just loosening the nuts and re-torquing them
from the bottom of the stack up. On the stud bolts that is.

Bill Hale