2022年4月28日 — How long in inches is 8mm? ... Eight millimeters is equal to 0.31 inches. There are 24.4 millimeters in one inch and one millimeter is equal to...
2020年6月27日 — The 8 is the nominal diameter in millimeters. 1″ = 25.4 mm, so it is similar diameterr to 5/16–18 UNC, but the threads don't match at all.
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