50pcs M4 Slide in T Nut Tee Sliding Nut for Aluminum Extrusion with Profile 2020 Sereis Slot 6mm

These T nuts fit perfectly in 2020 profile and lock in tight with M5 bolts. They don't have any sort of retaining ball or spring but they work very well once you get them tightened down. Material seems to be good quality and I've been able to make some very strong structural pieces with 2020 profile and some aluminum gusseted brackets and these T nuts.

Got it for the slide on for our 3D printer. It fits! And there’s a LOT of them

Work good fit nice

good

FIRST What is GOOD;The width of T-Nut will make these FAR more easily inserted, if using a corner bracket in a 2020 that has perpendicular mount faces (bracket having a 90 corner).What is SORTA BAD;They are about 2mm shorter than Drillpro Sliding T-Nuts and also about 2mm narrower, thus they may lack the feel you desire when designing something that is made to be adjustable in a 2020 slot (like a NEMA motor belt tension slot, or a door meant to loosen then slide out, while remaining level?).LESS important the surface sheen/gleam and evenness, not up to Drillpro level_I would feel much better about the purchase if they had been $2.00 cheaper.

I bought these along with screws for a t-slot project. they work great.

Slide in T-Nuts are great! Replaced all the old "crappy" T-Nuts that can rotate in my 3D printer.

I bought the wrong size of these. These are for the 20x20 extrusions not the surface table (3018 pro). They do fit the 20x20 channels and hold extremely well. I just wish I had bought the ones for the surface table. I’m not complaining though because now I have spares if I need them.