Expedition.Report
Explorer
They do offer nuts that can be installed and removed at anytime. They insert by rolling into the slot. Then all that is needed are long set screws to hold them in place and also act like pre-loaded bolts. Look for the nuts that appear to have a pin sticking up. That is a flexible rubber stem to help in positioning and removal.
Yes that's correct these bars use series 10 tnuts and I have some coming but the shop I was working with did not carry the SS ones and had to order them in for me.