![]() Once you don’t feel any movement (draw) on the tool, you can pretty much just give it an extra squeeze to set the rivet firm, then unthread the tool. It doesn’t take all that much force to collapse the collar on the rivet nut itself, so I’d say without changing anything else, I’d just stop short of applying as much force as you do now. I ended up finding some online instructions which helped a lot, especially once I figured out how to adjust the working stroke of the tool : I actually broke the mandrel on mine (instead of stripping the threads) on my first try. Rivet nuts, or threaded nut inserts, are known for installation efficiency, as the installation takes seconds to occur, and no damage nor finishing work is required on the rivet nut or parent application. I have the larger one and like you I got a little overzealous with mine, which is also a cheap import and came with no instructions. Rivet Nuts & Threaded Inserts Home Ribbed L Rivet Nuts Ribbed K Rivet Nuts Half Hex Rivet Nuts Flat Head Rivet Nuts Countersunk Rivet Nuts Cross Nuts Threaded Inserts Threaded Inserts Threaded Inserts We offer a complete line of threaded inserts in stock to meet all of your requirements. The rivet nut install tool pulls the rivet nut internal threads up to create a secure bulge on the backside of the parent application. Which style do you have? The kind the fits in one hand (like a gun) or the larger one where you have two arms you are trying to squeeze together? It sounds to me like you are using way more force than you need here. Find Rivet Nuts and Threaded Inserts and get Free Shipping on Orders Over 109 at Summit Racing Its the Season for Savings. ![]() As far as hole size, I am measuring the diameter of the insert w calipers and using the closest one size up metric drill bit I have - so it is within 0.5 mm, and would seem to be adequate, and have seen users with success online with much more haphazard drill/hole sizing. But I cannot find any guidance online, nor that came with the inserts, as far as X length of draw for Y insert, and none of the 'this is how you use rivet nut tool' instructions ever say anything about it. What am I missing? The only variables I can think of are size of hole and stroke (draw length? not sure what called) of the tool. The instructions that came with the tool are garbage, but all of the reviews are good. So I bought an additional set of inserts but it is the exact same result. I presumed the cheap inserts that came with my (ok time to admit i bought a cheap chinese one, RZX) cheap tool were the problem. However, every test ive done into a piece of sheetmetal on the bench has resulted in completely stripping the threads. I bought a couple of tools and was excited to use them, this is a great invention.
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