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4040 Series M8 T Slot Nuts Roll-in Spring - Spring Sheet Loaded Elastic Nuts (25 PCS) Carbon Steel for 4040 Series Aluminum Extrusion Profile Rail with 8mm Slot for 3D Printer & Sim Racing

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$14.99

$ 7 .99 $7.99

In Stock
  • Designed for 4040 aluminum profiles with an 8mm slot and M8 thread diameter. Ensure the groove depth matches your profile before ordering. For deeper grooves, a nut with shrapnel is recommended.
  • Made from high-hardness carbon steel with a nickel-plated surface for excellent rust resistance.
  • Features an easy-to-use design with a spring sheet: simply insert the nut, roll it into the slot, and twist with a screw to secure it in place.
  • Compatible only with aluminum profiles that adhere to European standards. Not suitable for custom aluminum profiles.
  • Ideal for use in CNC routers, 3D printers, CNC cutters, robotics projects, 3D engraving machines, and similar applications.


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.


Damien G.
Reviewed in the United States on February 4, 2025
Exactly as described at a decent price!
Aaron jimenez
Reviewed in the United States on January 7, 2025
So far so good
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