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怎么看螺丝是几号的

更新时间: 2019-04-01 00:00:00     

要想知道螺丝的尺寸,用卡尺量螺丝外径,也就是量螺旋扣直径的最高点,像如果螺杆外径是6毫米,那就是M6的螺丝。螺丝大多数都是双数(太小的除外),比如有:M6、M8、M10、M12、M14、M16、M18、M20、M22、M24、M28等。

关键词: 怎么 螺丝

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