Black powder coated, solid security rack panel.
50-1855 - Rack Rail Screws and Washers
Rack Rail Screws and Washers
Black finished screw 10 x 3/4" Black nylon washer 3/16" (I.D.), 3/8" (O.D.) washers 25 of each per package Mfr.#HU5205/5215 24
I have used MCM for many years and would give high recommendation for getting the job done right.