165PCS M3 M4 M5 M6 M8 M10 Rivet Nuts Stainless Steel Rivnut Threaded Insert Nut Riveter Set Blind Rivet Nut Assortment For Metal, Wood,Aluminium

Perfect for my project and so thumbs up from me

A good kit offering a number of options that will allow M3 threads to be embedded in 3D plastic prints as part of the post-build processes. Just insert them slowly and in small stages with a soldering iron so that you don’t overdo the heating and lose control of the hole size you are inserting it in to. I use these with PLA and PETG materials with a lower powered soldering iron tip inserted into the centre. It’s also worth washing the insert in something like IPA before use so as to reduce the chance of oil contamination - I haven’t found any issues yet though.

Rivets itself are great but you need will need 9mm drill bit to make a perfect fit hole for it. I used 8mm and drilled out a hole but it taking ages. About locking in place i make a tool but of course you can buy a proper one. Ps. Plenty video on YT. Do I recommend 6mm rivet nuts a short answer is yes.

Seems to be good quality

Purchased to use with a rivnut tool and they do exactly the thing they were purchased for. Used these in the keyhole slots of shelving and workbench legs to allow things to be bolted to them, job done with not problems.

These you don’t need to drill a bigger hole to fit compared to the hex ones

Excellent set - Have used a couple on my mower and on my boat and very pleased with the results

Excellent products you will need to pull real hard on the ruv gun though