100-Pack 2020 2040 2060 Roll in Spring Loaded T Nut M5 for 20x20 20 Series Aluminum Extrusions 6mm Slot Aluminum Profile Accessories (m5)

At this price point you expect a few duff units in a pack but there are surprisingly few. I prefer these over the half nuts that can screw themselves out, but these still have the advantage of being able to add into a channel retrospectively. They can still slide around when loose and the channel is vertical say but overall tend to stay in place until moved into position.

Whilst I am not, normally, forthcoming in giving a review I have found these tension T-slot nuts so much easier to use and manipulate into position compared to those with a spring "clip" that required much more force with the potential to break the clip making the nut useless. I would, therefore, highly recommend these T-nuts.

These T nuts are just perfect. Many don't hold but these are great with the ball bearing springs and can be inserted without having to slide in from the end but once in, orientate themselves correctly and do not fall out.Definitely the ones to buy for 20/20 profile

Less than 20% of the nuts held themselves in the aluminium profile due to the ball bearing not protruding far enough.

Unluckily the first two I took out the bag were jammed, I checked all of them, those were the only two. I call 98% a good pass mark though for the cost of these which is usually much higher.