Fuel pump

The invention relates to a fuel pump (10), in particular a high-pressure fuel pump, of a fuel system of an internal combustion engine, comprising a pump housing (12), a receiving opening (28) which is present in the pump housing (12), an internal thread (32) which is present in the receiving opening (28), and a connection (34) with an external thread (38) which is screwed into the internal thread (32) of the receiving opening (28), according to the invention, the pipe connection (34) has an axial engagement edge (40) at the end thereof facing the pump housing (12), which engagement edge interacts with an axial mating surface (30) on the pump housing (12). According to the invention, the quotient of the thread diameter (44) of the external thread (38) on the pipe fitting (34) and the thread length (46) for carrying is at least about 4. 本发明涉及一种内燃机的燃料系统的燃料泵(10)，尤其是燃料高压泵，其具有泵壳体(12)、存在于所述泵壳体(12)中的接收开口(28)、存在于所述接收开口(28)中的内螺纹(32)、具有外螺纹(38)的管接头(34)，所述外螺纹旋入到所述接收开口(28)的内螺纹(32)中，其中，所述管接头(34)在其面向所述泵壳体(12)的端部上具有轴向的咬合棱边(40