A electrical device mounting box that includes a device mounting plate with a screw coupler is disclosed. The electrical device mounting box and device mounting plate may be used to mount an electrical outlet receptacle. Specific implementations of the device mounting plate allow a screw to be pushed through a screw aperture on the device mounting plate and a coupling aperture on the screw coupler without rotation of the screw. The coupling aperture may bias away from the mounting plate as the screw is pushed through the coupling aperture. The coupling aperture may also include threading that engages with screw threading. Once the screw is pushed through the screw aperture and coupling aperture, the screw may be rotated to engage the screw with the screw coupler, thus biasing the screw coupler toward the device mounting plate. The screw coupler may include either a one or two piece screw coupler.