A clamping device for an external fixation system includes a clamp body and a locking assembly. The clamp body includes a first and second jaw that define a slot in communication with a first channel. The first channel can accommodate a first fixation element along a longitudinal axis of the first channel. The first jaw defines a first opening and the second jaw defines a second opening that are sized to receive a portion of the locking assembly. The locking assembly includes a first fastening element to pass through the first and second openings, and define a second channel to accommodate a bone pin. The locking assembly includes a second fastening element configured to engage with the first fastening element. The locking assembly is configured to restrict movement of the first fixation element and the bone pin relative to the clamp body in response to tightening of the locking assembly.
