1. Locate RAM base to desired mounting location, drill holes with 3/8" drill.
2. Place Mari-Nut™ insert all the way into pre-drilled 3/8" holes until flange is firmly secured against mounting surface.
3. Align RAM base over Mari-Nut™ and 3/8" pre-drilled holes.
3. Pass machine screw through base to be fastened.
4. Tighten until snug.
The "U" in the part number reflects product packaged in poly bag.