A novel system for constructing smooth-faced metal framing and novel tracks and track connectors therefore. The system and connectors of the present invention utilize metal framing tracks that demonstrate a U-channel configuration having a base, sidewalls with at least one recess channel formed longitudinally therein, and marginal lips that extend inward from the sidewalls. A variety structurally related connectors, comprising at least a connector body, lip or base flange, and two lip receiving grooves, are described. These connectors are capable of interconnecting metal framing performing all framing functions including, without limitation, floor and ceiling joists, top and bottom plates, roof rafters, roof rims, window sills, trusses, headers and wall studs. The connectors lock into place within the track and are secured from the inside using fasteners applied into the non-surface aspects and/or recess channels of the track. The track connectors demonstrate three dimensional rigidity and a box-like fit within the metal framing tracks to form joints that are strong, durable and precise. The framing system using the track connectors of the present invention leaves the outside surfaces of the framing members smooth and continuous, without protruding fastener heads or interruptions of any sort. The resulting smooth outside surfaces can be covered much more easily and inexpensively than the uneven and generally awkward outside surfaces presently encountered in metal framed structures. The manner in which the connectors lock within the tracks promote their safe and efficient installation. The system and connectors of the present invention enables an entire structure to be framed using one type and size of metal framing track cut to appropriate lengths on site.