🔧 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 Review

The threads were 1/4x20 but too small - poor quality control - unusable. Really disappointing considering they are from Small Parts.

When I first started using them I found that the threads didn't go all the way through the T-Nuts. Hole #7 has been drilled for it, but the thread is incomplete. The steel is hard and I couldn't finish the carving. This product is waste of money.

For those who state low speed because they are NOT through, please note that this is by design. They are designed to be held on a slotted table machine tool or drill press. If the bolt were allowed to go all the way it could touch the base of the table and instead of pulling the workpiece down it would rise up and damage the table. If you need it fully, run it to kill the threads.

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…