These terminals are a breeze to install, and they hold tightly enough that mild vibration won’t pop them off the screw. To attach, just loosen the screw, hook the terminal around the screw shank, and tighten. Choose hook terminals for terminal blocks that might jostle or vibrate occasionally—you’ll spend less time on installation than ring terminals and get a more reliable connection than spade terminals.

When attaching your wire, use a crimping tool to avoid a damaged barrel and loose connection.