James "Cubby" Culbertson wrote:

I'm wondering if there's any sort of "standard" for how many screws
to use
to attach tops? I've got a top that is 24Wx58Lx3/4 thick that's
going on
top of a dresser carcass.
snip

SFWIW, just finishing a chest that has a 20x44 top.

Used 8, #10, coarse thread, S/S, pan head, sheet metal screws along
with #10, S/S, flat washers to secure top. Carcass had 1/4" clearance
holes.

No good reason, just looked about right.

YMMV

have fun.

Lew