BenchReference / Drill sizes / 11.2 mm 11.2 mm Drill Decimal inches 0.4409″
Millimeters 11.2 mm
System Metric
Nearest equivalents in other systems System Nearest drill Size Difference Fractional inch 7/16″ 0.4375″ / 11.112 mm −0.088 mm (−0.0034″)
Number (wire gauge) #1 0.2280″ / 5.791 mm −5.409 mm (−0.2129″)
Letter Z 0.4130″ / 10.49 mm −0.71 mm (−0.0279″)
−0.896 mm +0.896 mm 11.2 mm 11 mm −0.2 mm 11.1 mm −0.1 mm 11.3 mm +0.1 mm 11.4 mm +0.2 mm Z −0.71 mm 7/16″ −0.088 mm ← #1 −5.409 mm tick position = true diameter · metric neighbors above, equivalents below · window ±0.9 mm
Positive difference = cuts a slightly larger hole than 11.2 mm. Sizes
beyond the window are listed with arrows — they are not close substitutes.
Neighboring metric sizes Drill Decimal in mm vs 11.2 mm 11 mm 0.4331 11 −0.2 mm 11.1 mm 0.4370 11.1 −0.1 mm 11.2 mm 0.4409 11.2 — 11.3 mm 0.4449 11.3 +0.1 mm 11.4 mm 0.4488 11.4 +0.2 mm
← 11.1 mm (smaller) 11.3 mm (larger) →
Compare 11.2 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 11.2 mm. See all data sources .