Patent ID: 6994280

Claim:
A fuel injection device ( 10 ) for internal combustion engines, comprising a base body ( 12 ), an injection housing ( 14 ), a fastening device ( 48 ) which includes at least one lock nut ( 16 ) with an annular land ( 32 ) and an annular shoulder on the injection housing ( 14 ) and which braces the injection housing ( 14 ) axially against the base body ( 12 ), a fuel inlet ( 24 ), and at least one valve element ( 22 ), the fastening device ( 48 ) having at least one annular face which is oriented toward the annular land ( 32 ) of the lock nut ( 16 ), said at least one annular face being a convexly curved spherical-segmental face, the spherical-segmental face having a center point (M) located on a longitudinal axis ( 42 ) of the fuel injection device ( 10 ).