Rivet Nut Tool Kit, 520pcs SAE & Metric Rivet Nut Assortment Kit w Galvanized Carbon Steel Flat Head Threaded Insert Nuts, Sizes 6-32 8-32 10-24 1/4"-20 5/16"-18 3/8"-16 M3 M4 M5 M6 M8 M10

Great assortment of rivet nuts. SAE & metric sizes. From pretty small to good sizes on larger rivet nuts. Worked very well on my project. Threads are strong on rivets. A+ quality.

These work great. Just make sure to run the screw in fast enough to make sure the threads are good on both the screw and the nutsert. I had 1 screw that started fine but got in about 6 turns and then got cross threaded for some reason. Anyway I tried to pull it back out using 2 long prybars and could not pull it out. Had to drill it out holding the back side with vicegrips.

Good kit to have around

Plastic bin is weak, separators and lid were loose, so all the sizes were mixed up on arrival. No M10 size, had two different height 3/8-16 instead. Otherwise it’s all there.

Great product

Low budget case with removable dividers resulted in partitions separating during shipment. The rivnut inserts intermingled and will require an hour or two to sort by size. Weighing inserts does not work as similar sizes (different threading) weigh similarly. The only recourse would be to sample thread each insert to determine metric vs inches of similar physical size. Also, for the two largest sizes were shortchanged by 2 parts. I am debating if this is worth my time or seek refund.Update: Seller, TrivdPro, contacted me after viewing my less than satisfying review and offered a full refund.

Good set with many options.

The inserts are great, but their box sucks. It took me a full day to separate all of these little pieces. Now that is done and I got to actually use it, my other impression was right on.