Review on 🛠️ Versatile 150pcs Rivet Nuts Assortment Kit: Yellow Zinc Plated Carbon Steel Finish, Multiple Sizes and Flat Head Threaded Inserts - Ideal Nutsert Assortment for Various Projects by Ryan Lawrence

Summary: Rivet nuts are really useful in two situations: 1) you can't get to the back to install and/or tighten/loosen the nut, 2 ) You want to cut into material that is too thin to thread straight. Recommendations: 1) The three main materials of rivet nuts are: steel (carbon), stainless steel and aluminum. Everyone has advantages and problems. Stainless steel is the strongest and most corrosion resistant, but more difficult to install correctly. Aluminum is lighter than steel and offers slightly better corrosion resistance as well as lower overall strength. 2) As with any new tool, there can be a slight learning curve. 3) The tighter the hole, the less likely the rivet nut will loosen and rotate freely. 4) Invest in a decent rivet nut tool. 5) Assess whether the sizes included fit your application, for example this set has a total of 320 pieces, 150 SAE and 170 metric. With the SAE set, the two smallest sizes make up 59% of the set. So if you don't need that many small sizes, it might be best to see what else is available. On the metric side, the two smallest (M4 and M5) make up 65% of the set. Pros: Carbon steel for good strength and ease of installation (compared to stainless steel); Zinc plate for corrosion resistance. Cons: many of the smallest sizes. Bottom line: $16 for a set of 150 (average $0.11 each) Rating this 5 stars.