A spring contact, an inertia switch, and a method of manufacturing an inertia switch are provided. The spring contact includes a conductive body portion having an outer edge and an inner edge partially surrounding an open area, a split in the conductive body portion, the split extending between the outer edge and the inner edge, and a conductive contact finger extending from the inner edge into the open area. The inertia switch includes a shell; a mass movably positioned within the shell; the spring contact positioned within the mass; a biasing member positioned between the spring contact and the header; and a conductive member extending through the header. The biasing member provides a bias between the spring contact within the mass and the conductive member. The method includes at least partially closing the split in the spring contact during insertion of the spring contact within the mass.