A fastener assembly configured to secure a first panel to a second panel includes a pin and a grommet. The pin includes a shaft connected to a tip. The grommet is configured to snapably secure into a hole of a panel. The grommet includes a central passage. The shaft is adjustably secured within the central passage, such that the shaft is allowed to shift a fixed distance within the central passage in a first direction, but is locked in place in the central passage with respect to a second direction that is perpendicular to the first direction.