66 PCS Rivet Nut Tool, M3 M4 M5 M6 M8 M10 Threaded Rivnut Kit Mandrel Set, Flat Head Insert Rivnuts for Manual Riveting Machine, Heavy Duty Mechanical

【Package Contents】You will receive 1 rivet nut tool kit, including 6 models: M3, M4, M5, M6, M8, and M10; it also comes with 60 rivet nuts (10 of each model). Meeting your different needs, you can find the right size tool for any scenario to improve work efficiency and compatibility. 【Premium Material】The threaded rivnut kit is made of high-hardness carbon steel with a smooth, flat surface, clear threads, and reinforced double washers, offering excellent durability and corrosion resistance. This tool is designed for long-term performance, ensuring reliable operation even under frequent use. 【Knurled Structure Design】The outer surface of the rivet nut is precision knurled, ensuring a firm lock with the workpiece after assembly, increasing friction, which effectively prevents loosening and slippage, and increases the overall strength of the connection. 【Easy Installation】Our flat head threaded insert rivnuts kit is easy to assemble. Simply assemble the nut onto the mandrel, tighten the locking nut with a wrench, hand, or electric drill, and then rotate the rivet nut tool to complete the riveting process. 【Wide Range of Applications】The rivet nut mandrel set can be used for fastening and riveting various sheet metals and other manufacturing industries. Suitable for repairing elevators, cars, bicycles, ships, switches, instruments, etc.