Ask Jenny of sew-classic if she has needle clamp screws - at the top of her page there is a contact place. To keep from loosing the little rascals, I have been learning to work over a sheet magnet (formerly a magnetic truck sign) & have a strip magnet on my bench, too. It catches most of the time. I also use some magnets to keep screws and parts together as I work. I still lose screws. I lost one off a 1907 Singer 15 the other day - I did find it eventually - sigh of relief.