BenchReference

#67 Drill Bit

Decimal inches 0.0320″
Millimeters 0.813 mm
System Number (wire gauge)

Nearest equivalents in other systems

System Nearest drill Size Difference
Metric 1 mm 0.0394″ / 1 mm +0.187 mm (+0.0074″)
Fractional inch 1/32″ 0.0313″ / 0.794 mm −0.019 mm (−0.0008″)
Letter A 0.2340″ / 5.944 mm +5.131 mm (+0.2020″)
−0.15 mm+0.15 mm#67#69−0.071 mm#68−0.025 mm#66+0.025 mm#65+0.076 mm1/32″−0.019 mm1 mm +0.187 mm →A +5.131 mm →tick position = true diameter · number neighbors above, equivalents below · window ±0.15 mm
Positive difference = cuts a slightly larger hole than #67. Sizes beyond the window are listed with arrows — they are not close substitutes.

Neighboring number sizes

Drill Decimal in mm vs #67
#69 0.0292 0.742 −0.071 mm
#68 0.0310 0.787 −0.025 mm
#67 0.0320 0.813 —
#66 0.0330 0.838 +0.025 mm
#65 0.0350 0.889 +0.076 mm
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 number size is 0.0320″. See all data sources.