50pcs 3D Printing Brass Nuts, M5x5.8x7.1mm M5 Threaded Insert Knurled Brass Nuts Female Thread Knurled Heat Embedment Nut for 3D Printing Parts Loptop Automotive Plastic Shell

I use these as heat inserts in 3d prints. I haven't had any complaints - the threads seem to be formed properly in all of the heat serts.

These are very clean and accurately machined parts. Perfect for heat setting into things made with FDM 3D printers.

easy to use

Accurate number as described and a shiny finish.

Easy to install, fit nicely and work great.

The size matches what I ordered. The challenge is that they are a little short/narrow and they do not have a flanged edge on one of the edges. Heat inserts created by other manufactures include a flange that helps to keep the insert from going too deep. The flange also helps with the overall look of the product.If this product had a flange, it was longer and wider, it would be a better product.

These are perfect for printed parts. Very easy to install, you just need a soldering iron.