Riv-Nuts

A number of locations on the aircraft require the installation of riv-nuts. A Riv-Nut metric tool with the ability to set M3 to M6 Riv-Nuts  is required to complete these task. There are many models available with varying quality but this builder invested in a basic Ebay model similar to the model shown below.

For those new to the use of these tools the operation requires that a rivet nut be screwed onto the a pull up stud to suit the selected riv-nut. Insert the nut into its hole and with the flange resting on the skin, squeeze the handle to upset the back of the nut enough to captivate it into the flange provided [see diagram below].

Riv-Nut installation diagram

The best place to test drive your new tool is at the rear access panel located at the rudder fin on the starboard side. Complete the riveting with the 1/8'' countersunk rivets provided in the kit. Fit a M3 pull up stud provided then a M3 riv-nut ,insert and squeeze to upset [expand] the back of the nut. Squeeze until a firm resistance is felt and then stop, inspect . With the tool purchased the depth stop was set to nearly full depth for this operation.

Rear access panel ready to rivet


You Tube Video - How to use a Rivet Nut Tool