Review on 🔩 Sutemribor 2020 Series 100 Pcs M5 T-Nuts: Carbon Steel Nickel-Plated Sliding T Slot Nut for 6mm Slot Aluminum Profiles (M5) - Top Quality Accessories! by Agonia Pedrosa

I bought these under the impression they worked the same as the slide nuts and then found that they slide in (and out) of the 2020 slot can from the front. It takes a while to get used to them, but they work. When you tighten them, they begin to rotate, orienting themselves in the slot from a vertical to a horizontal position. I gave this 4 stars because they are reluctant to align. I think a slightly steeper shoulder radius guides the nuts into self-aligning better.