WORKPRO 220Pcs Metric Rivet Nuts, Zinc Plated Carbon Steel Flat Head Threaded Insert Nut with Knurled Body, Include Storage Case, 7 Sizes Rivnuts Assortment Kit-M3, M4, M5, M6, M8, M10, M12

These aren’t something that I use everyday, but are very useful to have around when installing hardware to sheet metal or any thin material requiring something be securely attached.Great quality construction & easily installed with the proper tools.

I needed to get Metric Rivet Nuts and was unable to find them in my local hardware suppliers but was able to get what I wanted on Amazon

The ONLY thing about these is that you MUST get them properly installed. Then they are great. If you cross thread or try to set the bolts in at an angle, problems will show up.

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Stainless steel is a favorite due to its relative inertness and because its resists corrosion.The plan is to use these in aluminum panels to make them removable. Using rivet nuts eliminates the issue of enlarged screw holes when sheet metal screws are used instead of bolts.It will take a bit of trial and error to get the hole sizes just right but these look like they will hold well and are just what is needed.

Great product quick shipping

CONCLUSION: In case you don't want to read the whole review: If you have the tools and if this rivet nut is compatible with the materials involved in your project, then these are great fasteners at a bargain price. But I really suggest that you read the whole review to understand what that conclusion really means.PRODUCT SPECIFICATIONS: Skipping everything that you can find out on the product page, so be sure to read the whole thing first. The little plastic container had the full count of rivets, no shortchanging. They are weak magnetic stainless steel (tested). The metal is thick and strong (especially the front flange). The straight knurling are the part of the rivet that collapses and forms the rear flange when the rivet is tightened. The threads are properly formed. The quality of the rivets alone deserves a five-star rating.TESTING: When fully set, the rivet nut holds tight to the material. I was able to spin the rivet in the hole using pliers, but it sill held tightly enough that a bolt threaded through did not spin the rivet body. [NOTE: I installed this with a DIY setter. The drawbolt in the setter was grade 2 steel and it snapped off in the process. So, I don't know if I drew the rivet to it's fullest tightness against the material.] The material was 3/32" mild steel bar stock, near the high limit of the rivet's capacity. When set, the front flange was 5/64" above the bar. A test bolt threaded through perfectly after setting. THESE ARE FOR METAL ONLY. I set one rivet in tempered hardboard and one in thin plywood. The hardboard and plywood were thoroughly crushed and the rivet pulled itself through the material while being set. I knew better than to try plastic, as that would crack under the pressure.TOOLS AND ISSUES: Being stainless steel, this rivet is harder to pull tight than the aluminum and carbon steel types. The first issue with these rivets is finding the correct drill size for the hole. The closest drill bit to the listed hole size of 0.354" is a 9mm. The closest fractional drill size is 23/64 followed by a "T" sized drill bit. With the 23/64" bit, you may have to hammer the rivet into the hole if the metal is thick. I didn't test on thin metal, but hammering would probably cause the sheet metal to deform. 3/8" is a bit loose and you won't be able to set the rivet with a DIY spinning-type tool (Internet search phrase "DIY Rivnut setter") because the rivet will turn in the hole and the drawbolt won't be able to turn inside the rivet to draw it toward the material and create the crushed bulb inner flange. Professional setting tools work best because they use a straight pulling motion that crushes the rivet without any torque being applied. But those setters are expensive.

These have a higher quality finish and fit than the average regular steel rivnuts. Used these to reduce the issue of having corrosion build up and also stronger engagement with panels.