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🔧 Upgrade your 3D prints with brass inserts that mean business!
This Ktehloy 400-piece brass threaded insert kit offers a comprehensive range of M2 to M6 sizes, engineered for high thermal resistance and corrosion durability. Featuring precision knurled threading for superior torque grip, these inserts are ideal for heat-setting into thermoplastics like PLA and ABS, making them essential for professional-grade 3D printing, electronics, and plastic assembly projects.








| ASIN | B0CLKDPN65 |
| Best Sellers Rank | #14,750 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #21 in Hardware Nuts |
| Brand | Ktehloy |
| Colour | golden |
| Compatible Groove Diameter | 2 Millimeters |
| Customer Reviews | 4.8 out of 5 stars 585 Reviews |
| Drive Style | Spline |
| Exterior Finish | Brass |
| Fastener Type | Insert , Knurled |
| Finish Types | Unfinished |
| Grade Rating | industrial |
| Inside Thread Size | M2, M2.5, M3, M4, M5, M6 |
| Item Diameter | 2 Millimetres |
| Item Dimensions | 17.4 x 9.8 x 1.7 Centimeters |
| Manufacturer | Ktehloy |
| Material | Brass |
| Material Type | Brass |
| Maximum Shear Strength | [HIGH] |
| Metal Type | Brass |
| Model | Threaded Inserts Kit (400Pcs) |
| Number Of Items | 400 |
| Number of Pieces | 400 |
| Part Number | ket-1 |
| Screw Head Style | Flat |
| Set Name | Metric Threaded Inserts Assortment Kit |
| Size Name | M2 M2.5 M3 M4 M5 M6 |
| Thread Class | Coarse |
| Thread Coverage | Fully Threaded |
| Thread Size | M2 M2.5 M3 M4 M5 M6 |
| Thread Style | Right Hand |
| Thread Type | Iso Metric |
| UPC | 726929215744 |
| Unit Count | 400.0 Count |
N**.
Great inserts. Smooth threads.
M4 seems to be my go to size when I'm using threaded inserts. This pack was a great replacement for the lack of M4s on my workbench. I used them to finish a recent project of attaching a foot to a base for my leg lamp. It worked wonderfully and the price per piece was a nice value. Easy to install and very smooth threads.
C**L
Great little kit
Very nice set. Worked well.
C**G
Great assortment in one kit
Bought these for some 3d prints I made and they worked beautifully. Be sure to buy the heated inserter though, as well as the various sized tips for it. This make installation almost foolproof. Great quality and a good quantity in this kit.
A**R
Awesome inserts
The sizing is accurate, all are machined properly, and they go in and more importantly stay in. Threading is smooth and the small lip at the bottom does a great job at holding it in place when setting them. Will definitely buy these again when I need more.
O**K
Seems good enough
I haven't used any yet, so I'm not sure as what to expect. Good amount of different sizes which was what I was looking for anyway.
Trustpilot
3 weeks ago
2 weeks ago