Slotted Counterbore

[DougTheThug]

Does anyone know if there is a correct way to denote a slotted counterbore? I've made these drawings based on what I think is the correct notation for slots and counterbore. I also added a cross section of what I'm trying to convey. Don't mind my rounding. I know I should just use the cross section but I want to get peoples thoughts on the views without the cross section. Thanks.

Edit: Should clarify that the 4x is to indicate that there are 4 of these slots. I have noted the full length and width on a different slot so that the drawing doesn't get too busy in one place.

 

[3DDave]

A typical slot is full width X full length and an indication of 2XR to indicate a full radius (not necessary to use "FULL") for ASME Y14.5.

 

[DougTheThug]

A typical slot is full width X full length and an indication of 2XR to indicate a full radius (not necessary to use "FULL") for ASME Y14.5.

So I've done this on a separate slot already (ignore how messy it is) but how do I indicate the counterbore information? I was trying to work it into the 2XR as I don't see how else to include it in a clean way.