User talk:2409:4043:2281:A9C2:2275:A55E:57FF:D221

Recent edit to ISO metric screw thread
Hello, and welcome to Wikipedia. I noticed that you made a change to an article, ISO metric screw thread, but you didn't provide a reliable source. It's been removed for now, but if you'd like to include a citation and re-add it, please do so! If you need guidance on referencing, please see the referencing for beginners tutorial, or if you think I made a mistake, you can leave me a message on my talk page. Thank you! SamCordes Talk 05:56, 13 June 2019 (UTC)