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Dec 5, 2018 at 17:45 comment added Ray Koren @Lambie 'Stripped' is the correct adjective. Go to any construction site or machine / mechanical shop and this is the most common way to describe this in the parlance of our time, no contest.
Dec 5, 2018 at 16:55 vote accept Cardinal
Dec 4, 2018 at 16:37 comment added Chris H @Ruadhan2300 that's the head being stripped, while Lee Mac says the thread is stripped (as I would). The equivalent to a stripped head on a nut on hex-head bolt would be something like rounded off, by the way
Dec 4, 2018 at 16:33 comment added Doktor J @Ruadhan2300 while wood screws generally don't get stripped in this manner (losing their thread), it's not that uncommon with machine screws, where the mating metal piece is also metal
Dec 4, 2018 at 13:26 comment added J... Worth adding that, in the same context and to the opposite, a nut and bolt that won't turn at all can be called 'seized'.
Dec 4, 2018 at 12:33 comment added Ruadhan2300 Generally when I hear "Stripped" in the context of a screw I would assume that it means the slot for the screwdriver has been damaged and the tool can't get the grip to turn the screw. Not that the screw's thread is damaged. But a Stripped bolt does make sense in this context.
Dec 4, 2018 at 9:56 comment added Hugh Meyers This is correct. You can also be more specific about the damage to the thread (the spiral ridges in your picture). Stripped means the spirals are gone or worn so low they no longer grip. On the bolt, they can occasionally get bent so you might say the thread is damaged or bent or whatever. Very rarely a nut may get partly crushed so the inner part is no longer circular in which case you might say it is "out of true".
Dec 3, 2018 at 21:54 comment added Lambie Stripped is completely useless; worn is on the verge of being so.
Dec 3, 2018 at 21:30 comment added David Richerby @Lambie Though "worn" is much less specific.
Dec 3, 2018 at 19:17 comment added Lambie Right, screws of any kind are said to be stripped. Or alternatively, you can say threads are worn.
Dec 3, 2018 at 17:49 history answered Lee Mac CC BY-SA 4.0