T Nuts Tee Sliding Slot Nuts 40 Series M8 Threaded Slide in Pre-Assembly for 40x40 Aluminum Extrusions Frame with Profile 4040 Sereis 8mm Slot for CNC Router Build Rail 3D Printer 12pcs

This is exactly what I needed for my Billie Bars truck bed rack system (40 series, 8mm). Great product. Fits into the t slot with minimal movement or slop. Just as expected.

I bought these because I wanted to see if they would work for my Fanatac DD+ base and the Trak Racer Alpine TRX. They are the perfect measurement for the M8 bolts and knobs that are needed to use the Alpines DD mounting bracket. If you're like me and forgot to order T-nuts from Trakracer and then figured out you needed a set of M8 4040 series shipped quickly. These work!

Thses. work with my Fox Alien tracks to my CNC. Masuter 3S.

Overall every one of these M3 T nuts will be usable (correct qty as well) and the quality is acceptable, not great though and the surface finish is a bit rough. No observable burrs though. 1 star off because the dimensions in the picture are a little bit off and vary by more than I expected they would, see picture for full range of measured dimensions.

Appears to be well made and pieces have consistent size. Provided secure connection fastener for my T rail extrusion.

These Anvil Nuts do the Trick to get the Max Surface area when using 80/20 Extrusion but they must be inserted from the End

Good product just too small for what i needed

Had to get replacement T nuts because the ones that came with the Fanatec wheel base got lost. These work perfectly for mounting if you get M6 40 series nuts.