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In writing or reporting values, the acceptable inch units are the inch, inch and mil. The inch and mil are based on the application of metric prefixes to inch units. In general, use decimal units, …

= These inch and metric sizes convert to approximate equivalents for normal tool use.

Inch & Metric Thread Standards Visit our online store for product availability by the nominal major diameter and the number of threads per inch. For example, a 1/4-20 (UNC coarse) thread has …

Inch to Metric Conversion ... 7/8 1 800-642-0921 or visit us at southernfasteners.com

19/64 5/16 . 21/64 . 11/32 . 23/64 . 3/8 25/64 . 13/32 . 27/64 . 7/16 . 29/64 15/32 . 31/64 . 1/2 .

25 mm per INCH Every 4 inches is 100 mm Nominal (For these examples Millimeter decimals have been dropped)