The dimensioning and tolerancing practices used on engineering drawings and related product specifications use either decimal inch (in) or millimeter (mm) units.

INCHES FRACTIONAL DECIMAL mm METRIC FRACTIONAL DECIMAL . 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 .

Inch to Millimeter Conversion Chart INCH METRIC

0.5000 mm 0.3969 0.7938 1.1906 1.5875 1.9844 2.3813 2.7781 3.1750 3.5719 3.9688 4.3656 4.7625 5.1594 5.5563 5.9531 6.3500

Inches to mm Conversion

mm decimal 201 7.9134 202 7.9528 203 7.9921 204 8.0315 205 8.0709 206 8.1102 207 8.1496 208 8.1890 209 8.2283 210 8.2677

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