90PCS Threaded Inserts Kit, 9-Size Assortment M3 M4 M5 M6 Heat Set Brass Inserts with Storage Box, 3D Printing Brass Nuts Threaded Inserts Nuts for Plastic, Female Thread Knurled Heat Embedment Nut

90PCS Threaded Inserts Kit, 9-Size Assortment M3 M4 M5 M6 Heat Set Brass Inserts with Storage Box, 3D Printing Brass Nuts Threaded Inserts Nuts for Plastic, Female Thread Knurled Heat Embedment Nut

• 【90-Piece Professional Brass Threaded Insert Kit】​ This kit includes 90 high-quality brass heat-set inserts, featuring 9 professional specifications: M3 * 4 * 5, M3 * 5 * 5, M3 * 6 * 5, M3 * 8 * 5, M4 * 6 * 6, M4 * 8 * 6, M4 * 4 * 6, M5 * 10 * 7, M6 * 8 * 8.0, with 10 pieces of each specification. It meets diverse precision fastening needs from M3 to M6.
• 【Practical 9-Compartment Storage Box Included】​ The kit comes with a dedicated 9-compartment storage box that organizes all 9 different sizes of inserts scientifically. It keeps your workspace tidy, allows for quick identification and access, and is a practical aid for makers and professionals who value efficiency.
• 【Durable Brass Construction & Universal Design】​ Crafted from corrosion-resistant brass, these inserts are robust and suitable for a variety of thermoplastics like ABS, PLA, and PETG. The universal internal thread design is compatible with standard metric screws, ensuring reliable connections in diverse applications.
• 【Easy Heat-Set Installation & Permanent Fixing】​ Can be easily embedded into pre-drilled holes using a heat gun, soldering iron, or ultrasonic method. The heat-setting process fuses the insert with the plastic substrate, creating a permanent, high-strength thread that effectively prevents loosening under vibration or high load.
• 【Versatile Professional & DIY Applications】​ Optimized for 3D printed parts, plastic shells, woodworking projects, and model making. An ideal choice for repairing laptops, automotive plastic parts, electronic device casings, and various DIY structural reinforcements.