A camera module for use in a vision system for a vehicle includes a housing portion, a lens holding portion and a securing element. The housing portion at least partially houses circuitry of the camera module and includes a first mating surface and a first perimeter flange around the first mating surface. The lens holding portion at least partially houses a lens assembly of the camera module and includes a second mating surface and a second perimeter flange around the second mating surface. The securing element is disposed along the first and second perimeter flanges and overlaps opposite surfaces of the first and second perimeter flanges to secure the housing portion relative to the lens holding portion.