20PCs 5/16''-18 Stainless Steel Rivet Nuts Nutsert Threaded Rivet Insert Rivnuts 5/16-18UNC

Excellent product great service

I used these to replace some failing fasteners holding the mirrors on my service truck. Installed cleanly, threads seem good, they are holding tight in the sheet metal panel and have not rusted after a few months in the weather. That's not the most strenuous test, but so far so good. Used a few on other miscellaneous projects too. The case is nice to keep things organized and will actually stay latched shut. You probably have experienced cheap little cases of fasteners that pop open at the worst times; sometimes the smallest things can be the biggest headaches. These rivnuts have been a good value and I would definitely buy them again.

Very good quality

works good. fixed my boat fast an easy.

Hope your patient! It took almost 3 weeks from order to receipt. Great item, especially in stainless steel but I hope your not in a hurry.

Only used 5 so far, one to test if my tool could handle stainless steel. Then used 4 Rivnuts to mount a towel rack on an aluminum wall. Worked well.I think my Rivnut tool is only rated for 8/32, maybe 10/32 Steel Rivnuts. Larger Aluminum Rivnuts, no problem. It takes a heavy duty tool to put in steel or stainless steel Rivnuts.If you don't have a toolI have used a grade 5 bolt, a few washers to allow things to slip, a "regular nut with the threads drilled out" and a long nut.Setup --- Note --- A threaded rod works too, with a double nut tightened together in place of a bolt1. Place the “threaded long nut” on the bolt first.2. Then a couple washes3. Then the “nut with the threads drilled out”4. Then a nice tight fitting washer5. Then the Rivnut.How to install Rivnut --- Try a test run for good luckI forgot to tell you this is where you may need your third hand to keep the Rivnut from turning.1. First wrench -- Holds the bolt from turning2. Second wrench -- Turn the “Threaded long nut”3. Third wrench -- Now using your third handHold the “nut with the threads drilled out from turning and spinning the Rivnut as you tighten the system.

Works good

These are very sturdy stainless steel inserts. The thread engagement is more than 1 dia. The dimensions are spot on for the pre drill and grip range. One word of caution though. Buy the tool for doing the install. I was able to install with the "YouTube" DIY tool but they are not east. I broke or bent screws each time I installed one. Harbor Freight has three different levels of tool for the job.If you do try to install with a home built tool, make sure to use a coupling nut as your driver and a high strength bolt for your threaded rod. Cheep ungraded or stainless fasteners will bend, stretch, or shear.