StarTech.com 10-32 Cage Nuts - 50 Pack - Rack Mount Clip Nuts - For Square Hole Server Rack - Black (CABCAGENUTS1032) - Separadores de tuercas - negro (paquete de 50) - para P/N: 2POSTRACK42, 4POSTRACK12U, 4POSTRACK25U, 4POSTRACK42, RK1219WALHMR, RK1219WA