Amazon.com: M6 x 16mm Rack Mount Cage Nuts, Screws and Washers for Rack Mount Server Cabinet, Rack Mount Server Shelves, Routers, 50 PACK Rack Mount Screws and Square Insert Nuts, Self-Locking Cable
StarTech.com M6 x 12mm - Screws and Cage Nuts - 50 Pack, Black - CABSCREWM6B - Rack Accessories - CDW.com