BenchReference / Drill sizes / 19/32″ 19/32″ Drill Bit Decimal inches 0.5938″
Millimeters 15.081 mm
System Fractional inch
In 64ths 38/64″
Nearest equivalents in other systems System Nearest drill Size Difference Metric 15 mm 0.5906″ / 15 mm −0.081 mm (−0.0032″)
Number (wire gauge) #1 0.2280″ / 5.791 mm −9.29 mm (−0.3657″)
Letter Z 0.4130″ / 10.49 mm −4.591 mm (−0.1807″)
−1.206 mm +1.206 mm 19/32″ 9/16″ −0.794 mm 37/64″ −0.397 mm 39/64″ +0.397 mm 5/8″ +0.794 mm 15 mm −0.081 mm ← #1 −9.29 mm ← Z −4.591 mm tick position = true diameter · fractional neighbors above, equivalents below · window ±1.21 mm
Positive difference = cuts a slightly larger hole than 19/32″. Sizes
beyond the window are listed with arrows — they are not close substitutes.
Neighboring fractional sizes Drill Decimal in mm vs 19/32″ 9/16″ 0.5625 14.287 −0.794 mm 37/64″ 0.5781 14.684 −0.397 mm 19/32″ 0.5938 15.081 — 39/64″ 0.6094 15.478 +0.397 mm 5/8″ 0.6250 15.875 +0.794 mm
← 37/64″ (smaller) 39/64″ (larger) →
Compare 19/32″ with another size
Data provenance. ASME B94.11M, Twist Drills (standard drill size series) (ASME). Millimeter and inch values are converted with the exact definition 1 in = 25.4 mm; the canonical dimension for this fractional size is 0.5938″. See all data sources .