[Cory]

When I was on 100 and we used 8020 we used toilet bolts in place of t-nuts in a lot of situations. Much cheaper and like Martin said, you can use lock nuts.

You still want a pretty healthy supply of drop in t-nuts because you'll always want to add something later that you didn't foresee.

At the time I think a somewhat local supplier (maybe Sacramento?) was giving FIRST teams a discount on 8020. That was about 7 years ago now though, so I'm not sure if they still do.

T nuts should fit equally well in either profile.