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🔧 Upgrade your 3D prints with pro-level threaded inserts—because your creations deserve the best!
The ruthex M4 Threaded Inserts set includes 50 precision-engineered brass inserts designed for heat or ultrasonic embedding into thermoplastic 3D printed parts. Featuring M4 internal threading and a spiral knurled exterior, these inserts provide superior grip, corrosion resistance, and reusability, making them the top choice for professional-grade 3D printing assembly.










| ASIN | B07YSV66Y5 |
| Best Sellers Rank | #1,199 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Nut Inserts |
| Brand | ruthex |
| Color | Metric Threaded Insert |
| Compatible Groove Diameter | 4.25 millimeters |
| Customer Reviews | 4.8 4.8 out of 5 stars (511) |
| Drive Style | Spline |
| Exterior Finish | Brass |
| Fastener Type | Insert |
| Finish Types | Brass |
| Global Trade Identification Number | 04260528720910 |
| Grade Rating | Industrial |
| Inside Thread Size | M4 x 8 1 |
| Item Diameter | 6.6 centimeters |
| Item Dimensions | 3.82 x 2.6 x 0.35 inches |
| Manufacturer | ruthex |
| Material Type | Brass |
| Maximum Shear Strength | mittlere bis hohe Scherfestigkeit |
| Metal Type | Brass |
| Model | GE-M4x81-001 |
| Number Of Items | 1 |
| Number of Pieces | 50 |
| Outside Diameter | 4 millimeters |
| Part Number | GE-M4x81-001 |
| Screw Head Style | trapezoidal |
| Set Name | ruthex M4 Brass Threaded Inserts (50pcs) |
| Size Name | M4x8.1 (50pcs) |
| Thread Class | Class 9.6 |
| Thread Coverage | Fully Threaded |
| Thread Size | M4 x 8.1 |
| Thread Style | Right Hand |
| Thread Type | Metric |
| Unit Count | 1.76 Ounce |
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