BenchReference / Drill sizes / 1.5 mm 1.5 mm Drill Decimal inches 0.0591″
Millimeters 1.5 mm
System Metric
Nearest equivalents in other systems System Nearest drill Size Difference Fractional inch 1/16″ 0.0625″ / 1.587 mm +0.087 mm (+0.0034″)
Number (wire gauge) #53 0.0595″ / 1.511 mm +0.011 mm (+0.0004″)
Letter A 0.2340″ / 5.944 mm +4.444 mm (+0.1749″)
−0.15 mm +0.15 mm 1.5 mm 1.4 mm −0.1 mm 1.6 mm +0.1 mm #53 +0.011 mm 1/16″ +0.087 mm ← 1.3 mm −0.2 mm 1.7 mm +0.2 mm → A +4.444 mm → tick position = true diameter · metric neighbors above, equivalents below · window ±0.15 mm
Positive difference = cuts a slightly larger hole than 1.5 mm. Sizes
beyond the window are listed with arrows — they are not close substitutes.
Neighboring metric sizes Drill Decimal in mm vs 1.5 mm 1.3 mm 0.0512 1.3 −0.2 mm 1.4 mm 0.0551 1.4 −0.1 mm 1.5 mm 0.0591 1.5 — 1.6 mm 0.0630 1.6 +0.1 mm 1.7 mm 0.0669 1.7 +0.2 mm
← 1.4 mm (smaller) 1.6 mm (larger) →
Compare 1.5 mm 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 metric size is 1.5 mm. See all data sources .