cSeao 120pcs M3 x 3 x 5mm Female Press in Thread Brass Heat Set Inserts Embedment Nuts for 3D Printer Laptop Plastic

Embedded a bunch of these into a 3D printed helmet - and the results are incredible. Great value for the money.

The local hardware store wanted 15 cents each. I only neededn 12, but this was a good price. I used them to make threaded holed in 3d printed parts. I put one on the pointed tip of my soldering iron and melted it into place. Bingo! threaded holes that hold up better than threading the plastic.

I make a lot of Resin skulls and my #1 seller is one that my Granddaughter designed. I call them Gearheads.I was making them with just gears and they sold great.Then I added shafts using these nuts to hold them. They sold better.Then I added chain-fall valves, also using these nuts. They sell like crazy!

I used these inserts to insert them in plastic and 3D Printed parts, to either hold a metal screw or a setting screw. Just heated the part up and inserted it into a hole a little smaller than the diameter of the insert.

The media could not be loaded. I cut myself trying to open the plastic box that these came in, but otherwise they're fine

These are exactly what you expect. But, do yourself a favor and pick up some soldering iron tips to aid in inserting these. They are a real pain without the proper tips.

The inserts are made out good quality brass and the machining is clean. They work great in my 3D prints. My order came with 126 inserts. Bonus!

Really saved my butt on a project at work. Arrived super fast and allowed me to get a $5k project out the door, on time.