100/50/30 Pcs 30 and 40 Series Aluminum Slot Carbon Steel Half Round Roll In Spring T Slot Nut with M4 Thread

- Made of Carbon Steel and lasting performance. - Used for: Aluminum Profile 3030 and 4040 Series, Slot 8mm; It is used for T-slot aluminum extrusions to connect other parts. - These t slot nuts can be inserted post-assembly by dropping them into the slot. - Inserting a nut into the slot and twisting with a screw locks the nut in place. - It is multifunctional, for use to build CNC routers, 3D printers, CNC laser cutters, CNC plasma cutters, robotics projects, 3D carvers, machine guards, workstations, etc.