20 pieces of M6 captive cage nuts, made from 65Mn spring steel, designed for secure mounting in server shelves and cabinets. Each nut assembly holds an M6 nut in a spring steel cage so you can install or fasteners quickly and reliably. Key benefits Secure mounting: captive cage design holds the M6 nut in place to reduce dropped or lost nuts during installation and maintenance. Durable material: 65Mn spring steel provides reliable spring tension and long service life under repeated installation cycles. Fast installation: cage nut can be inserted into standard square or slotted rack holes for quicker assembly and easier positioning. Bulk pack: 20 pieces give enough spares for builds, upgrades, or routine maintenance without frequent reordering. Precise fit: M6 thread size matches standard M6 screws and bolts used in rackmount equipment. Function and compatibility Function: provides a captive threaded anchor point where a tapped hole is not available, converting square or slotted panel openings into an M6 mounting point. Compatibility: intended for server shelves, server cabinets, rackmount rails, and other IT enclosures that accept captive cage nuts and M6 fasteners. Size: threaded for M6 screws and bolts. Cage design accommodates common rack hole configurations. Performance highlights Retains tension and alignment during screw insertion and removal. Helps maintain secure connections under vibration and routine service activity. Consistent thread engagement for predictable torque and clamping. Typical use scenarios Installing or replacing shelf supports in a server cabinet where existing tapped holes are not present. Mounting network equipment or accessory brackets to rack rails that use M6 fasteners. Stocking spare parts for data center maintenance to speed up rack upgrades and avoid downtime. This pack of 20 captive cage nuts provides a practical, durable solution for creating M6 threaded mounting points in server and network enclosures.