Please could someone give me guidance on whether to dimple or countersink these two parts (trim access reinforcement and trim access coverplate, left elevator) and the associated nut plates. The screws are AN507-6R6. I'm guessing it should be dimpled because the metal doesn't look thick enough to countersink adequately, but if so what size dimple die should I use? #6? Sorry if this is dumb - being used to metric I struggle with some of these sizings/measurements!
Many thanks
Chris![Confused :confused: :confused:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Many thanks
Chris