A threaded product comprising: a tubular pin member comprising an external thread form at a pin end thereof, the external thread form (68, 80) comprising an external load flank, an external crest, an external stab flank, an external root, a first external radiused transition between the external load flank and the external crest, and a second external radiused transition between the external crest and the external stab flank, the external load flank being inclined with respect to a centerline of pin member, the external stab flank being inclined with respect to the centerline of the pin member and in a direction opposite the external load flank, and wherein the external root has an elliptical profile tangentially joining the external load and external stab flanks; and a tubular box member that coaxially threadingly engage with the tubular pin member and comprising an internal thread form at a box end thereof, the internal thread form comprising an internal load flank, an internal crest, an internal stab flank, an internal root, a first internal radiused transition between the internal load flank and the internal crest, and a second internal radiused transition between the internal crest and the internal stab flank, the internal load flank being inclined with respect to a centerline of tubular box member, the internal stab flank being inclined with respect to the centerline of the pin member and in a direction opposite the internal load flank; wherein the external load flank and the internal load flank form a first area of mating contact and the external stab flank and the internal stab flank form a second area of mating contact, and characterised in that: the internal thread form has a shape that conforms to a buttress thread profile without an elliptical shaped internal root so that the internal root and the external crest form a third area of mating contact and that the external root and the internal crest form a dope volume. a tubular pin member comprising an external thread form at a pin end thereof, the external thread form (68, 80) comprising an external load flank, an external crest, an external stab flank, an external root, a first external radiused transition between the external load flank and the external crest, and a second external radiused transition between the external crest and the external stab flank, the external load flank being inclined with respect to a centerline of pin member, the external stab flank being inclined with respect to the centerline of the pin member and in a direction opposite the external load flank, and wherein the external root has an elliptical profile tangentially joining the external load and external stab flanks; and the external thread form (68, 80) comprising an external load flank, an external crest, an external stab flank, an external root, a first external radiused transition between the external load flank and the external crest, and a second external radiused transition between the external crest and the external stab flank, the external load flank being inclined with respect to a centerline of pin member, the external stab flank being inclined with respect to the centerline of the pin member and in a direction opposite the external load flank, and wherein the external root has an elliptical profile tangentially joining the external load and external stab flanks; and a tubular box member that coaxially threadingly engage with the tubular pin member and comprising an internal thread form at a box end thereof, the internal thread form comprising an internal load flank, an internal crest, an internal stab flank, an internal root, a first internal radiused transition between the internal load flank and the internal crest, and a second internal radiused transition between the internal crest and the internal stab flank, the internal load flank being inclined with respect to a centerline of tubular box member, the internal stab flank being inclined with respect to the centerline of the pin member and in a direction opposite the internal load flank; wherein the external load flank and the internal load flank form a first area of mating contact and the external stab flank and the internal stab flank form a second area of mating contact, and characterised in that: the internal thread form has a shape that conforms to a buttress thread profile without an elliptical shaped internal root so that the internal root and the external crest form a third area of mating contact and that the external root and the internal crest form a dope volume.