Review on 🔩 Te-Co 41406T Black Oxide 1018 Steel Tapped T-Slot Nut, 3/8"-16 TPI, 5/8" Height x 7/8" Width x 9/16" Table Slot (Pack of 5) by Black Miller

Screws did not thread very smoothly into these nuts. For one thing, it was insignificant; a little difficult to fully deploy two of them. I had to use tools to slide the bolt through the last two. I had to take them to my workbench, put them in a vise, put some WD40 on the threads and use a ratchet and screw to clean the threads. This bolt still works, but it definitely failed. I'm giving it 3 stars because now that the threads are clean and the screws go in and out smoothly, they work as I hoped. Just not happy with what I had to do to get her there. I didn't see any mention of it in any of the reviews I read, so I may have had a bad batch.