These M5 knurled brass inserts are essential for creating strong, threaded connections in plastic and wood materials. The double helical design ensures a tight grip, preventing rotation and pull-out. Ideal for use in 3D printing, woodworking, and automotive projects, these inserts are easy to install by heating and pressing into the material. Features -Color:Golden -Material:Brass -Size:0.70X0.70X0.60cm/0.28X0.28X0.24in -Enhanced stability: the double diagonal design increases the friction between the nut and the thread, ensuring secure and stable fastening -Quick and easy installation: the embedded design allows for quick and easy installation and removal, saving time and effort -Durable copper: made from durable copper, these nuts offer excellent electrical conductivity and resistance to corrosion -Versatile use: specification makes these nuts suitable for a wide range of mechanical and electronic devices -Secure fastening: these copper nuts effectively prevent bolt loosening, providing a stable and secure connection for your equipment Package list: 60pcs brass nuts