Cage Nuts
A cage nut is a square nut held in a spring-steel cage that clips into a square hole in a rack rail or enclosure panel. The captive nut floats slightly to self-align with the mating screw, and it can be removed and repositioned — the standard mounting for server racks, network cabinets, and sheet-metal enclosures. Eugene Fastener & Supply stocks cage nuts in the common rack threads 10-32 and 12-24 and metric M6.
Clip the cage into the square hole, drive the rack screw, and the floating nut takes the load. By the piece or in bulk, same-day shipping before 2pm Pacific.
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Cage Nuts for Racks & Enclosures
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Where Cage Nuts Are Used
Cage nuts are the threaded half of square-hole rack mounting: 19-inch server and network racks, AV racks, and sheet-metal enclosures with square mounting holes. The floating nut compensates for slight misalignment, and because the cage clips in and out, you can reconfigure a rack without tapping new threads. Match the thread (10-32, 12-24, or M6) to your rack screws and the cage size to the panel hole and thickness.
FAQ
What is a cage nut?
A cage nut is a square nut held in a spring-steel cage that clips into a square hole in a rack rail or enclosure. The captive nut floats to self-align with the screw and can be removed and repositioned, which is why it is standard for server racks and cabinets.
What thread size are rack cage nuts?
The common rack threads are 10-32 and 12-24 (inch) and M6 (metric). Match the cage nut thread to your rack screws and the cage to the square hole size and panel thickness.
How do you install a cage nut?
Hook one edge of the spring cage into the square hole, squeeze the cage, and snap the other edge in so it clips flush. Then drive the rack screw into the captive nut. A cage-nut tool makes insertion and removal easier.
Are cage nuts removable?
Yes. The spring cage clips in and out, so you can reposition or replace cage nuts to reconfigure a rack without permanent threads.
Why Buy from Eugene Fastener
- By the piece or in bulk, with cross-reference help.
- Same-day shipping on orders placed before 2pm Pacific.
- Since 1969 — serving Pacific Northwest manufacturers, contractors, and equipment makers for over 55 years.
Cage nuts pair with rack screws and complement panel nuts for enclosure work. Browse all nut types or contact our sales team for sizing, cross-references, or bulk pricing. Eugene Fastener & Supply — serving the Pacific Northwest since 1969.