Patent ID: 8038180

Claim:
A metal fitting for metal conduit, comprising: a threaded nut comprising metal; a threaded body comprising metal; only a single all metal ferrule; said threaded body including a ferrule camming surface that engages the single ferrule when the fitting is assembled onto a metal conduit end; said threaded nut having a socket that at least partially retains said single ferrule, said socket defined by a drive surface that forms a first angle relative to a longitudinal axis of the fitting, wherein the socket is further defined by an interior socket frusto-conical wall surface that tapers radially outward from the drive surface; said single ferrule having a driven surface that is engaged by said drive surface when the fitting is assembled onto the conduit end in a finger tight position and an outer surface at a rearward portion thereof that engages said radially tapered interior socket frusto-conical wall surface when the fitting is tightened onto the conduit end to a pulled-up condition.