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I would like to find out what English units of measure are for a screw size described as ST5X70. Where can I get this information?

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That would be a self tapping screw with a diameter of 5 mm, and a length of 70 mm. In English units it would be a self tapping screw with a diameter between 3/16" and 13/64" (0.1969"), and a length of 2 3/4".

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