607Pcs Threaded Inserts for Plastic, Heat Set Inserts M2/2.5/3/4/5/6

Threaded Inserts Built to Last Crafted from premium brass, these heat set inserts deliver exceptional thermal conductivity, corrosion resistance, and rugged strength. The heat inserts resist cracking, stripping, and wear ensuring secure fastenings that stay firm even after repeated assembly and disassembly | Value Pack for 3D Printing This heat set insert kit packs the most commonly used 3D printer accessories including 6 sizes (M2, M2.5, M3, M4, M5, M6) threaded inserts and an upgraded heat insert tool with 6 soldering tips (Iron Not Included). It ensures strong, reliable threads in all your 3D printed plastic parts, saving time and money on every project | Precision Engineered Threaded Insert These brass hardware nuts feature precision threads that won't slip when installing. The 45 spiral knurl gives better torque and pull-out strength, biting into plastic for a stronger hold than straight inserts. No countersinking needed just use a heat insert press to heat and press for a permanent fit | Easy to Use Installing these nut inserts is simple with a standard soldering iron. Heat to the recommended temperature (180230C for PLA, 230280C for ABS), press the tip against the heatset insert for 38 seconds until it sits flush, then let cool for 3060 seconds you now have a strong, reusable metal thread embedded in your plastic part. This method also works with ultrasonic or heat press equipment | Reliable Universal Thread Inserts These screw inserts are designed for all thermoplastics PLA, PETG, ABS, PPS, PP, and more. Ideal for 3D prints, injection-molded parts, automotive casings, electronics, toys, and laptop housings. Every heat insert is rigorously inspected for durability, with responsive support you can count on