"Bert Coules" wrote:
I'm thinking of relocating a satellite dish so I'm interested in concrete
fixings. The problem I had the first time round (using straight-through
bolts and nuts) was drilling into the concrete (the wall of a sectional
garage): the inner face broke away as the drill came through. Perhaps
with these bolts I could get away with blind holes if the thickness of the wall permits.

I've used Monti screws for this in the past.

http://www.screwfix.com/details.htm?id=84748

Available in various sizes and types.