The invention relates to an assembly part for connecting a dashboard to a body part of a vehicle, the assembly part comprising:



a male first portion able to engage with the dashboard, and
a female second portion able to engage with the body part of the vehicle via a unidirectional and adjustable approaching movement,
the male portion being substantially flat and extending in a longitudinal direction from a first end in contact with the female portion to a hook-shaped free second end,
the male portion and/or the female portion being configured to prevent translational movement between the dashboard and the body part when the male portion is engaged with the dashboard and the female portion is engaged with the body part.