







🔧 Elevate your 3D prints with precision brass inserts that hold like a pro!
The RX-M3x5.7 is a 100-piece set of M3 brass threaded inserts designed for thermoplastic 3D printed parts. Featuring opposite spiral knurled nuts for balanced torque and high pull-out force, these press-fit nuts embed easily via heat or ultrasound. Compatible with popular 3D printing materials like PLA, PETG, and ABS, they offer durable, corrosion-resistant fastening solutions ideal for professional-grade enclosures and assemblies.


















| ASIN | B08BCRZZS3 |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 356,766 in DIY & Tools ( See Top 100 in DIY & Tools ) 443 in Nut Inserts |
| Colour | yellow |
| Customer Reviews | 4.8 4.8 out of 5 stars (1,398) |
| Cutting Diameter | 3 Millimetres |
| Date First Available | 20 Sept. 2020 |
| Finish | Brass |
| Head Style | Flat |
| Item Package Quantity | 1 |
| Item Weight | 30 g |
| Item diameter | 3 Millimetres |
| Item model number | GE-M3x57-001 |
| Manufacturer | LUTDTRS |
| Material | Brass |
| Number of Pieces | 100 |
| Part number | GE-M3x57-001 |
| Shape | Square |
| Size | M3 |
S**E
Great for 3D printed enclosures
I use these in every single 3D printed enclosure I design and they are perfect. Just finished off a bag of M3's and I've ordered some M4 and M5
D**S
Inserts, for inserting...
Perfectly as described.
M**N
Never used these before absolutely great easy and works very well
liked every thing about them, first time used them no issues easy worked well and will definitely now use them.
J**N
Good product
A**N
İyi ürün
M**Z
Muy buena calidad, funciona perfectamente, como descrito.
M**S
Overall, I’m very happy with these heat inserts. They shipped quickly and arrived in good condition with no issues. In use, the machining appears to be high quality and the knurling is clean and consistent. Screws thread in smoothly without binding or cross-threading. I primarily use these for 3D printed parts and have not experienced any fitment or durability problems. They perform exactly as expected and I would recommend them to anyone installing threaded inserts in 3D prints.
A**E
Tolle Erfindung die kleinen Dinger!!!
Trustpilot
2 months ago
1 week ago