Hammer Drop-in M5 T Nut for 20mm T-Slot/V-Slot Aluminum Extrusions (Pack of 50)

These t slot nuts let you attach plates, brackets, and other parts to standard 20mm aluminum extrusions (with a slot opening of 6mm) with standard M5-0.8 screws or bolts (not included). They 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. Use to build CNC routers, 3D printers, CNC laser cutters, CNC plasma cutters, robotics projects, 3D carvers, machine guards, workstations, etc. Note: These hammer nuts require a slot opening of 6mm to work properly. 80/20 20 series extrusions, for example, have a smaller opening, making it impossible to drop in these nuts or twist them into place even if the nuts are slid or rolled in.