Review on DynaCable M6 16mm Industrial Strength 60-Pack: Cage Nuts, Screws, and Washers for Rack Mount Server Cabinet, Shelves, Routers - Zinc Plated, Rust-Free by Eduardo Long

Very good packaging. Square slot nuts in individual bags. Screws in separate bags. to keep all parts in place between uses. And keeps the square nuts from scratching the pretty black screws. The insert nut fits perfectly into the square holes in our server rack, fits exactly what you want them not to pop out. Rails when you try to insert a screw and tighten it with one hand while holding the item to be assembled with the other. The nut appeared to be gold anodized, the finish easy to hold in hand. black anodized, the coating did not chip or scratch when installing the screws. Also the head of the screw is big, it doesn't want to fall out of the grooves of your fastener. The plastic washers did not fall apart under the bolt or leak out from under the bolt head. The whole kit did a great job in building our engineering server rack. There's still work to be done, but I've used one set of mounting screws for 75% of what I need it for. I used about 1/3 of the pack. so far and no bad details. I would buy again. There were so many other options on Amazon to buy from other sources and many had 50/50 complaints. This set had no reviews when I bought it strictly from the photo and it's not the cheapest set but a fair price. You get what you pay for. The cheapest is usually not the best solution.