metric comparison size · nominal diameter
8.3 mm
drill bit size.
A 8.3 mm bit measures 0.3268 in across (8.300 mm).
The metric diameter is the generated reference value; inches are a conversion. Commercial set contents vary.
Calibrated relative diameter · 1 in reference
8.3 mm · metric
0.3268 in
8.300 mm Designation8.3 mmmetric
Inch decimal0.3268nominal
Metric conversion8.300millimetres
Where this size sits from 0 to 1 inch 8.3 mm · 8.300 mm on a zero to 25.4 millimetre scale. Neighbor marks: 21/64, P.
Measured neighbors
What sits beside 8.3 mm.
“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.
A generated comparison series from 0.5 to 13.0 mm in 0.1 mm steps. It is not a claim that every size is included in every commercial set.
Open source record