BenchReference / Drill sizes / 11/64″ 11/64″ Drill Bit Decimal inches 0.1719″
Millimeters 4.366 mm
System Fractional inch
Nearest equivalents in other systems System Nearest drill Size Difference Metric 4.4 mm 0.1732″ / 4.4 mm +0.034 mm (+0.0014″)
Number (wire gauge) #17 0.1730″ / 4.394 mm +0.029 mm (+0.0011″)
Letter A 0.2340″ / 5.944 mm +1.578 mm (+0.0621″)
−0.349 mm +0.349 mm 11/64″ #17 +0.029 mm 4.4 mm +0.034 mm ← 9/64″ −0.794 mm ← 5/32″ −0.397 mm 3/16″ +0.397 mm → 13/64″ +0.794 mm → tick position = true diameter · fractional neighbors above, equivalents below · window ±0.35 mm
Positive difference = cuts a slightly larger hole than 11/64″. Sizes
beyond the window are listed with arrows — they are not close substitutes.
Clearance drill for Neighboring fractional sizes Drill Decimal in mm vs 11/64″ 9/64″ 0.1406 3.572 −0.794 mm 5/32″ 0.1563 3.969 −0.397 mm 11/64″ 0.1719 4.366 — 3/16″ 0.1875 4.762 +0.397 mm 13/64″ 0.2031 5.159 +0.794 mm
← 5/32″ (smaller) 3/16″ (larger) →
Compare 11/64″ 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 fractional size is 0.1719″. See all data sources .