BenchReference / Drill sizes / 5.7 mm 5.7 mm Drill Decimal inches 0.2244″
Millimeters 5.7 mm
System Metric
Nearest equivalents in other systems System Nearest drill Size Difference Fractional inch 7/32″ 0.2188″ / 5.556 mm −0.144 mm (−0.0057″)
Number (wire gauge) #2 0.2210″ / 5.613 mm −0.087 mm (−0.0034″)
Letter A 0.2340″ / 5.944 mm +0.244 mm (+0.0096″)
−0.456 mm +0.456 mm 5.7 mm 5.5 mm −0.2 mm 5.6 mm −0.1 mm 5.8 mm +0.1 mm 5.9 mm +0.2 mm 7/32″ −0.144 mm #2 −0.087 mm A +0.244 mm tick position = true diameter · metric neighbors above, equivalents below · window ±0.46 mm
Positive difference = cuts a slightly larger hole than 5.7 mm. Sizes
beyond the window are listed with arrows — they are not close substitutes.
Neighboring metric sizes Drill Decimal in mm vs 5.7 mm 5.5 mm 0.2165 5.5 −0.2 mm 5.6 mm 0.2205 5.6 −0.1 mm 5.7 mm 0.2244 5.7 — 5.8 mm 0.2283 5.8 +0.1 mm 5.9 mm 0.2323 5.9 +0.2 mm
← 5.6 mm (smaller) 5.8 mm (larger) →
Compare 5.7 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 5.7 mm. See all data sources .