Filter head and threaded metal nozzle insert

A threaded metal nozzle insert for the at least partial casting into a plastic filter head, comprising:

• a cold extruded hollow part having a longitudinal axis;
• a plurality of radially stepped radial shoulders including a first radially stepped radial shoulder, a second radially stepped radial shoulder, and a third radially stepped radial shoulder;
• the first radially stepped radial shoulder having a first axial sealing surface facing a first axial direction, the first radially stepped radial shoulder extending radially outwardly from the cold extruded hollow part;
• the second radially stepped radial shoulder extending radially outwardly from the cold extruded hollow part and having an annular surface extending continuously in a circumferential direction of the longitudinal axis that faces a second axial direction opposite the first axial direction;
• the third radially stepped radial shoulder extending radially outwardly from the cold extruded hollow part and having a second axial sealing surface facing the second axial direction;
• an anti-rotation mechanism disposed on an outer lateral surface of the cold extruded hollow part axially between the first axial sealing surface of the first radially stepped radial shoulder and the annular surface of the second radially stepped radial shoulder;
• and
• wherein the second radially stepped radial shoulder is disposed axially between the first radially stepped radial shoulder and the third radially stepped radial shoulder.

A filter head, comprising:

• a plastic injection molded receiving component defining a receiving cavity and having an axial sealing surface at least partially surrounding the receiving cavity;
• a threaded metal nozzle insert arranged in the receiving cavity of the plastic injection molded receiving component, the threaded metal nozzle insert having a cold extruded hollow structure defining a longitudinal axis;
• a plurality of radially extending plastic ribs disposed in the receiving cavity of the plastic injection molded receiving component, wherein the plurality of plastic ribs extend from the threaded nozzle insert along a radial direction towards the axial sealing surface of the plastic injection molded receiving component;
• the threaded metal nozzle insert including at least one radial shoulder extending radially outwardly from the longitudinal axis, the at least one radial shoulder defining a further axial sealing surface sealingly engaged with the receiving cavity of the plastic injection molded receiving component;
• and
• wherein the threaded nozzle insert further includes an anti-rotation mechanism disposed on an outer lateral surface to secure against rotation in the plastic injection molded receiving component, the anti-rotation mechanism including a plurality of radial projections interlocking with a plastic material of the plastic injection molded receiving component.