AL-KO Cobra Trailer Coupler Keyhole Slot?

Cabinet hanger, For mounting in drilled hole, keyhole slot keyhole slot keyhole slot depth When routing a keyhole slot in 34 wood, what depth do you recommend? 38 Or depending on the bit, make the depth keyhole slot dimensions Infinity Cutting Tools - Keyhole and T-Slot Router Bits More Info:

keyhole slot Keyhole slots are a great way to affix wooden hangings, such as a shelf or picture, to a wall But if the mounting screws aren't perfectly level