fractional-inch drill · nominal diameter
23/64
drill bit size.
A 23/64 bit measures 0.3594 in across (9.128 mm).
The fractional diameter is exact; decimal and metric values are conversions.
Calibrated relative diameter · 1 in reference
23/64 · fractional
0.3594 in
9.128 mm Designation23/64fractional
Inch decimal0.3594nominal
Metric conversion9.128millimetres
Where this size sits from 0 to 1 inch 23/64 · 9.128 mm on a zero to 25.4 millimetre scale. Neighbor marks: 9.1 mm, T.
Measured neighbors
What sits beside 23/64.
“Nearest” means nominal diameter only. It does not make a neighboring size acceptable for a tolerance, tapping, reaming, or fastener application.
This row is at the exposed edge of its series.
Source record
Drill Bit Size Chart.
Fractional sizes are exact rational multiples of one inch.
Open source record