A keystone jack is a female connector used in data communications, particularly local area networks (LANs). A keystone jack is usually mounted in a wall plate or patch panel. A keystone plug is the matching male connector, usually attached to the end of a cable or cord that is inserted into the jack for data communications.

A principal advantage of keystone connectors is their versatility. Several types of keystone jack can be mounted on a single patch panel. They are available in CAT3, CAT5e, and CAT6; in either shielded or unshielded forms. Keystone Jacks can also accommodate cords and cables having various numbers of conductors.

The term keystone derives from the characteristic shape of the jack, resembling the standard RJ-11 wall jack used to connect telephone sets, fax machines, and dial-up computer modems to conventional telephone lines.

1. Contacts are 50 microinches gold plating over 100 microinches nickel on phosphor bronze.
2. 110 or Krone type IDC termination for 22-26 AWG solid wire.
3. Color coded termination for easy identification and installation. Available on both T568A and T568B wiring.
4. 9 color choice of body provides great options for color designation of the port.
5. Dust caps/retention caps over termination provide strain relief.
6. Supplied with color coded dust cover to stop foreign objects or dust.