The screws worked as intended. I needed these for a couple of glass knobs I had bought on Amazon since the screws that came with the knobs which were 10mm, 20mm and 30 mm were all too short and the wood was thicker so it naturally required a longer screw. The Screws seem like great quality I just use one washer to keep the screws from loosening from the knobs plus the knobs are securely attached and not going anywhere. If my family moves though I will be taking the knobs with along with the screws. Now I have extra screws, which I’m sure will come in handy somewhere. I highly recommend these screws.