fractional-inch drill · nominal diameter
7/32
drill bit size.
A 7/32 bit measures 0.2188 in across (5.556 mm).
The fractional diameter is exact; decimal and metric values are conversions.
Calibrated relative diameter · 1 in reference
7/32 · fractional
0.2188 in
5.556 mm Designation7/32fractional
Inch decimal0.2188nominal
Metric conversion5.556millimetres
Where this size sits from 0 to 1 inch 7/32 · 5.556 mm on a zero to 25.4 millimetre scale. Neighbor marks: 5.6 mm, 5.5 mm.
Measured neighbors
What sits beside 7/32.
“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