Details: Secure-It Hex-Cone Nut HXN-510.1 Hex Security Fasteners

The HXN round fastener attaches to your equipment using an existing screw in the device you want to protect. Once installed, thread a security cable through the fastener, securing the equipment and blocking the screw so no one can get to it. This fastener works great if you have a screw available and don't want to permanently glue on a fastener.