looking on where to find a 2 3/8" Robertson head self taping finish screw for slatwall. I am located in Tucson, AZ (need some of these screws for a midnight job TONIGHT!) Thanks

I am looking for a slatwall panel near Upland, California. Home Depot and Lowes don’t carry it. I can buy it online, but EVERYONE sells massive panels that are 4′ x 8′ and around 0 + shipping.
I only need 2 pieces that are around 2′ x 2′. Also, I’d prefer to buy it at a store rather than pay for shipping.
Any ideas where I might find this?
Thanks! Heidi