BenchReference / Drill sizes / 9.5 mm 9.5 mm Drill Decimal inches 0.3740″
Millimeters 9.5 mm
System Metric
Nearest equivalents in other systems System Nearest drill Size Difference Fractional inch 3/8″ 0.3750″ / 9.525 mm +0.025 mm (+0.0010″)
Number (wire gauge) #1 0.2280″ / 5.791 mm −3.709 mm (−0.1460″)
Letter V 0.3770″ / 9.576 mm +0.076 mm (+0.0030″)
−0.76 mm +0.76 mm 9.5 mm 9.3 mm −0.2 mm 9.4 mm −0.1 mm 9.6 mm +0.1 mm 9.7 mm +0.2 mm 3/8″ +0.025 mm V +0.076 mm ← #1 −3.709 mm tick position = true diameter · metric neighbors above, equivalents below · window ±0.76 mm
Positive difference = cuts a slightly larger hole than 9.5 mm. Sizes
beyond the window are listed with arrows — they are not close substitutes.
Neighboring metric sizes Drill Decimal in mm vs 9.5 mm 9.3 mm 0.3661 9.3 −0.2 mm 9.4 mm 0.3701 9.4 −0.1 mm 9.5 mm 0.3740 9.5 — 9.6 mm 0.3780 9.6 +0.1 mm 9.7 mm 0.3819 9.7 +0.2 mm
← 9.4 mm (smaller) 9.6 mm (larger) →
Compare 9.5 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 9.5 mm. See all data sources .