Clips
Metal cage nuts, to clip with front mounting ("Helical" type)
These parts are easily clipped by hand on the front face of supporting panel.They are designed to permit a premounting of the set screw-nut on the element to fasten.
Plastic nuts, to clip with front mounting, and simple plastic nuts
These parts are easily clipped by hand on the front face of supporting panel.They are mostly used with screws for plastic.