Review on 🔧 Te-Co 41401 Black Oxide T-Slot Nut Pack of 5 - 1/4"-20 TPI, 1/4" Height x 9/16" Width x 5/16" Table Slot by Jacob Richardson

For some inexplicable reason the threads do not go all the way through the nut. This leaves only about 2 threads for the screw/bolt to "hook in" unless the screw/bolt abuts the nut. Two threads are not enough to carry a serious clamp load and lowering the bolt/bolt all the way down will cause the load to be distributed unevenly across the threads as the bolt/bolt will be slightly chamfered (not in line with the axis). holes) when you do this. Since they are hardened, it is not possible to refill them yourself. Not recommended unless the design is altered to allow the threads to pass fully.