[Dave221 (David)]

Thanks for the suggestions everyone, much appreciated. What a great resource we have with IIS.

I did try Bunnings but they weren’t available in the ‘nuts and bolts’ section, I’ll try the ‘concreting’ section. If not, I’ll consider using straight hex bolts. I thought that would be adequate but I noticed that J bolts were suggested in most posts. I’m wondering whether the ‘washer’ option might make it a bit too difficult to push them down into the wet concrete.

If all else fails, I can always ‘Ramset’ or epoxy glue the bolts in later

Thanks again.