number drill · nominal diameter

#65
drill bit size.

A #65 bit measures 0.0350 in across (0.889 mm).

The inch decimal is the published nominal designation; millimetres are a conversion.

Diameter conversion cross-checked

Calibrated relative diameter · 1 in reference

#65 · number

0.0350 in

0.889 mm

Designation#65number

Inch decimal0.0350nominal

Metric conversion0.889millimetres

Where this size sits from 0 to 1 inch

#65 · 0.889 mm on a zero to 25.4 millimetre scale. Neighbor marks: 0.9 mm, #64.

0 25.4 mm

Show calibrated outline Open in Finder

Measured neighbors

What sits beside #65.

“Nearest” means nominal diameter only. It does not make a neighboring size acceptable for a tolerance, tapping, reaming, or fastener application.

Other naming systemsABSOLUTE DIAMETER DELTA

0.9 mmmetric 0.0354 inΔ +0.011 mm 0.8 mmmetric 0.0315 inΔ -0.089 mm 1/32fractional 0.0313 inΔ -0.095 mm

Same seriesNEAREST NOMINAL ROWS

#64number 0.914 mmΔ +0.025 mm #63number 0.940 mmΔ +0.051 mm

Source record

ASME.

The standard text is paywalled. Number and letter series are cross-checked against public manufacturer charts; exact standard edition/page verification remains a release gate.

Open source record

#65drill bit size.

What sits beside #65.

ASME.

#65
drill bit size.