Looks awesome great job.
I just purchased 10 of those bigger cabinets with draws to put smaller cadet/fcub/154 tractor parts in one, drills & taps easy outs in another, Welding/cutting stuff in another (I have 66 brand new torch cutting tips from ebay)and terminal ends ect in another one, Tractor and small engine ignition parts/spark plugs in another, hydraulic fittings in another, nuts/bolts/flatwashers/loc washers ect in another one. Lets say my garage will be all cleaned up in a few days now. Now i will know were everything is. I figure to weld up a dolly type frame on casters and mount these cabinets back to back so i can move it out when i need something and put it away when its not in use. I stock nuts & bolts from 1/4" up to 1" threads too. For what the local hardware store charges me for a few nuts/bolts i can purchase them for around the same cost for a box of 100 at http://www.mcmaster.com
in the long run we save if were always fixing mechanical stuff anyhoo. I may need to get your larger sized racks next for the bigger hardware too. I purchased the little cabinets with draws a few years back but there not big enough now. Not having it all sorted out i purchased the same stuff over and over because i couldn't find it or forgot i had it.