500 Pcs Press-In Nut M2 M2.5 M3 Drive-In Nut Knurled Nut Threaded Insert

Nice package and assortment of threaded inserts!

Quality of the inserts is good, they all look well machined and clean. The dimensions of the ones I have checked have been spot on to what they are supposed to be. The bolts thread good into the inserts. The storage box is very decent, the latches are easy to open and close and the dividers are molded into the box, so you can keep all the inserts properly organized and not mixed up.

Got this to put small screw features in 3d prints and they're working great! Easily inserted after heating (though I need to tune my models), hold great, threads are clean and smooth. Appreciate that they sent the kit in a plastic bag on the off chance the container breaks in shipping. That said, case works great at keeping all separate. Good buy.

Reviewed: 500Pcs Brass Knurled Threaded Embedment Nuts M2 M2.5 M3 These are well made with well cut, accurate threads. They install easily and are very secure once cool. The dimensions shown on the sales page are accurate but the diameter of the smooth machined boss on the end is not given nor is it always consistent across different lengths of the same diameter. I like to set the printed hole size so that the boss end of the insert snaps into the printed hole so had to measure. I printed a quick test part in Bambu Basic PLA for each screw size and set them with my usual temperatures. They set fine but with a bit more squeeze-out on both ends than expected. Some detailing of printed hole size and temperatures gave better results. There is no suggested hole size given so some experimenting may be in order. Once set I did a pull test on a few and none budged. Nice. The locking plastic box has a printed map to locate the inserts and tweezers are included to pick them out. All in all at $7.89 this set is a very good value with many common thread sizes and lengths used in 3D printing.

A 3D-Printing enthusiast's best friend when it comes to assembling complex prints. I recently printed parts for a 4-cylinder short block. The inserts greatly simplified the assembly process of the main bearing caps and the rod bearing caps.