Review on 🔩 100-Pack of M4 x 4mm (L) x 5mm (OD) Female Thread Brass Embedment Nuts with Knurled Texture by Greg Baker

I bought them specifically for the needs of the project. I was not impressed with their condition in the form in which they were received. They already had some level of tarnishing/corrosion out of the box. See picture for reference compared to another brand I bought which was clean and shiny. In addition, a straight knurl does not provide as much holding power and is more difficult to install than double angle inserts. In general, this is normal ... but there are better options.