The RAM-MARI-NUT-4U consists of (4 qty) brass nuts with rubber expansion feature for blind hole mounting applications.

Installation Instructions:
1. Locate RAM base to desired mounting location, drill holes with 3/8" drill. 
2. Place Mari-Nut&trade   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&trade   and 3/8" pre-drilled holes. 
3. Pass machine screw through base to be fastened. 
4. Tighten until snug. 

Note:
The "U" in the part number reflects product packaged in poly bag.