Need part numbers

I bought a set of Tahoe wheels for my Silverado but I am having a hard time locating parts or part numbers for the lug covers and center cap screws. The part number on the wheels is 9593950. The wheel uses 3 flat head cap screws to hold the center cap on and chrome lug covers. If anyone could point me in the right direction or can get the part numbers I would greatly appreciate it.

Aftermarket wheels?

Might help to post a pic as well.

Here's a pic