Step68: Corrosion-Proof the Doubler sand Rivet the Nutplates to Them
Apply the corrosion-protection of your choice to the doublers (transferring the location and orientation marks as necessary). Then flush-rivet a K1000-08 nutplate at each screw hole, with the rivet heads on the undersides of the doublers.
Now we inverted the procedure: 1) drill the rivet holes of the nutplate using a drill gauge. 2) countersink for the flush head 3) light abrasion of the surface using scotch brite 4) cleaning with acetone 5) applying a primer
