Burner nozzle assembly

A gas burner tube assembly comprising:

• a gas supply means including a first cylindrical tube member terminating in a first end;
• an annular coupling nut having a central opening through which the first end of said tube member extends, said coupling nut having a cylindrical counterbore which extends axially inward of said central opening about the first end of said tube member and terminates in a transversely extending shoulder;
• a radially outward extending circumferential bead formed integrally with the tue and located within the counterbore adjacent the first end of the tube member and positioned in engagement with the transversely extending shoulder;
• a generally cylindrical gas orifice nozzle having an inlet end with a transverse end face and an axially extending throughbore, said bore having an inlet end receiving the first end of the tube member, said throughbore having an outer terminal end defining a gas outlet orifice which is substantially smaller in diameter than the diameter of the bore at the inlet end, a circumferential exterior portion of the nozzle about the inlet end being threadedly received in the coupling nut with the end face sealingly engaging the bead;
• said bead further including first and second opposed end surfaces with the first end surface extending generally parallel to and in engagement with the transversely extending shoulder in said coupling nut, the second opposed end surface being inclined toward the first opposed end surface at an angle of 45.degree. relative thereto and sealing engaging the end force of the nozzle in a narrow circumferentially continuous band.