Tripp Lite 50PC Rack Enclosure Cabinet Square Hole Hardware Kit M5 Screws and Washers SRCAGENUT5MM Package Content: 50 x M5 cage nut, 50 x M5 screw, 50 PVC cup washers Manufacturer Warranty: 5 years warranty Product type: Rack screws, nuts and washers Square hole hardware kit - 50 each M5 cage nuts and bolts Fastens equipment to square hole rack mount rails Compatible with all square hole racks (EIA 310D) 5-year limited warranty