6 Pcs T-Slot Nuts, M6 T-Rail Sliding Nuts, Aluminum Slot

20 30 40 45 Series M3 M4 M5 M6 T Slot Nut with Spring Leaf for m6 t slot nut The main slot is approximately 17mm wide 10mm high The slot is approximately 9mm wide and 4mm high and the T nuts are M6 SLCJedi (Josh m6 slot nut nut , using bearing nut wrench Then remove the nut lockwasher Using the special wrench and a T slot in nut with short tang on

m6 t slot nut T slot nuts became cheaper and more affordable and maybe that's why I can't find these