548-piece brass heat-set threaded insert assortment kit with 22 sizes and 8 soldering tips. Designed for 3D printing, thermoplastics, electronics, and plastic component assembly. Key features: 548-piece heat-set threaded insert assortment Includes 22 sizes from #2-56 to #10-32 Includes 8 soldering tips for installation Made of high-quality brass Excellent thermal conductivity and corrosion resistance 45-degree angled knurling for improved grip Clear precision threads for stable fastening Suitable for PLA, PETG, ABS, PPS, PP, and other thermoplastics Works with 3D printed parts, plastic housings, electronics, and molded components This 548-piece heat-set threaded insert kit is designed for creating strong, reliable threads in 3D printed parts and plastic components. The assortment includes 22 sizes ranging from #2-56 to #10-32, along with 8 soldering tips for convenient installation, making it a practical choice for makers, repair work, electronics projects, and workshop use. Crafted from high-quality brass, these threaded inserts offer excellent thermal conductivity, corrosion resistance, and durability. They are designed to handle the heat used during thermal installation and are suitable for repeated use in demanding plastic applications. The inserts feature 45-degree angled knurling to improve torque resistance and holding strength. Precision-cut threads help provide stable, dependable fastening while reducing the chance of slipping during installation or use. The design also includes guiding elements for easier placement, helping improve efficiency during assembly. These inserts can be installed using a common soldering iron, ultrasonic methods, or molded directly into parts during injection processes. They are suitable for use with a wide range of thermoplastics, including PLA, PETG, ABS, PPS, and PP. Ideal applications include 3D printed objects, injection-molded plastic parts, electronics housings, automotive plastic casings, laptop shells, and circuit board-related projects. This assortment is a versatile fastening solution for plastic part assembly and repair. Size breakdown included: #2-56 x 1/8"" – 60 pcs #2-56 x 3/16"" – 60 pcs #2-56 x 1/4"" – 60 pcs #4-40 x 1/8"" – 40 pcs #4-40 x 5/32"" – 40 pcs #4-40 x 3/16"" – 20 pcs #4-40 x 7/32"" – 20 pcs #4-40 x 1/4"" – 20 pcs #4-40 x 9/32"" – 20 pcs #4-40 x 5/16"" – 20 pcs #6-32 x 3/16"" – 20 pcs #6-32 x 1/4"" – 20 pcs #6-32 x 5/16"" – 20 pcs #6-32 x 1/2"" – 10 pcs #8-32 x 1/4"" – 20 pcs #8-32 x 5/16"" – 20 pcs #8-32 x 3/8"" – 20 pcs #8-32 x 7/16"" – 10 pcs #8-32 x 1/2"" – 10 pcs #10-32 x 9/32"" – 10 pcs #10-32 x 3/8"" – 10 pcs #10-32 x 1/2"" – 10 pcs Type: Heat Set Threaded Insert Kit Number of Pieces: 548 Material: Brass Sizes Included: #2-56, #4-40, #6-32, #8-32, #10-32 Number of Sizes: 22 Installation Type: Heat Set Features: Knurled, Corrosion Resistant, Assorted Sizes, Soldering Tips Included Included Accessories: 8 Soldering Tips Application: 3D Printing, Thermoplastics, Electronics, Plastic Parts Suitable For: PLA, PETG, ABS, PPS, PP