Introducing our 4040 Series M8 T Slot Nuts with Roll-in Spring Sheet – a superior choice for precision and ease in your projects. Designed specifically for 4040 aluminum profiles, these nuts feature an 8mm slot and an M8 thread diameter, ensuring a perfect fit for your extrusion needs. Crafted from high-hardness carbon steel and coated with a nickel-plated finish, these nuts offer exceptional rust resistance and durability for long-lasting performance. The innovative spring sheet mechanism allows for effortless installation: simply insert the nut into the slot, twist with a screw, and watch as it securely locks into place with minimal effort. Before placing an order, ensure your profile's groove depth is compatible; for deeper grooves, we recommend using nuts with shrapnel. These T-slot nuts are tailored for use with aluminum profiles that adhere to European standards and are not suitable for custom profiles. Perfect for a range of applications, including CNC routers, 3D printers, CNC cutters, robotic projects, and 3D engraving machines, these T-slot nuts offer both reliability and convenience in your assembly process. Each pack contains 25 nuts, making them an excellent addition to your workshop toolkit.