Circular thru bolt pattern, set position of coincident reliefs opposite side of part 1

[renasis]

I have a 4 hole bolt pattern, 90 deg apart. I know how to set position these holes realative to datums A, B and C. The problem I am not sure about is how to set position on bolt releiefs (in side wall) that need to be concentric to these holes on opposite side of part. Do i need to create datum on each hole? Set each relief position relative to corresponding hole? Seems pretty repetitive for a simple requirement. Any advice on this?

 

[3DDave]

https://youtu.be/8Pq80E-ZIf8?t=1764

For your use, see

Alternatively since the bolt heads are located no differently than the bolt bodies, use the same DRF [A|B|C] for them as well with an appropriate tolerance and clearance.