BenchReference / Drill sizes / 5.3 mm 5.3 mm Drill Decimal inches 0.2087″
Millimeters 5.3 mm
System Metric
Nearest equivalents in other systems System Nearest drill Size Difference Fractional inch 13/64″ 0.2031″ / 5.159 mm −0.141 mm (−0.0055″)
Number (wire gauge) #4 0.2090″ / 5.309 mm +0.009 mm (+0.0003″)
Letter A 0.2340″ / 5.944 mm +0.644 mm (+0.0253″)
−0.424 mm +0.424 mm 5.3 mm 5.1 mm −0.2 mm 5.2 mm −0.1 mm 5.4 mm +0.1 mm 5.5 mm +0.2 mm 13/64″ −0.141 mm #4 +0.009 mm A +0.644 mm → tick position = true diameter · metric neighbors above, equivalents below · window ±0.42 mm
Positive difference = cuts a slightly larger hole than 5.3 mm. Sizes
beyond the window are listed with arrows — they are not close substitutes.
Clearance drill for Neighboring metric sizes Drill Decimal in mm vs 5.3 mm 5.1 mm 0.2008 5.1 −0.2 mm 5.2 mm 0.2047 5.2 −0.1 mm 5.3 mm 0.2087 5.3 — 5.4 mm 0.2126 5.4 +0.1 mm 5.5 mm 0.2165 5.5 +0.2 mm
← 5.2 mm (smaller) 5.4 mm (larger) →
Compare 5.3 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 5.3 mm. See all data sources .