fractional-inch drill · nominal diameter
9/16
drill bit size.
A 9/16 bit measures 0.5625 in across (14.287 mm).
The fractional diameter is exact; decimal and metric values are conversions.
Calibrated relative diameter · 1 in reference
9/16 · fractional
0.5625 in
14.287 mm Designation9/16fractional
Inch decimal0.5625nominal
Metric conversion14.287millimetres
Where this size sits from 0 to 1 inch 9/16 · 14.287 mm on a zero to 25.4 millimetre scale. Neighbor marks: 35/64, 37/64.
Measured neighbors
What sits beside 9/16.
“Nearest” means nominal diameter only. It does not make a neighboring size acceptable for a tolerance, tapping, reaming, or fastener application.
Source record
Drill Bit Size Chart.
Fractional sizes are exact rational multiples of one inch.
Open source record