Nut capable of cleaning screw groove

The utility model relates to the technical field of nuts. The nut comprises a nut body and a dustproof cap, a threaded groove is formed in the middle of an inner cavity of the nut body, a lower magnetic ring is fixedly connected to the top of the nut body, an oil injection opening is formed in the lower magnetic ring, a collecting pipe located under the oil injection opening is arranged at the topof the inner cavity of the nut body, and an oil guide pipe is fixedly connected to the bottom of the collecting pipe. The utility model discloses a nut capable of cleaning a screw groove. Lubricatingoil is injected into the two oil injection openings in the top of the nut. Lubricating oil flows into the annular collecting pipe; finally, the lubricating oil is guided into the threaded groove of the nut through a plurality of oil guide pipes arranged in an annular array; according to the technical scheme, the lubricating oil is added into the nut and gradually permeates downwards to lubricatethe space between the nut a