letter drill · nominal diameter

V
drill bit size.

A V bit measures 0.3770 in across (9.576 mm).

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

Diameter conversion cross-checked

Calibrated relative diameter · 1 in reference

V · letter

0.3770 in

9.576 mm

DesignationVletter

Inch decimal0.3770nominal

Metric conversion9.576millimetres

Where this size sits from 0 to 1 inch

V · 9.576 mm on a zero to 25.4 millimetre scale. Neighbor marks: 9.6 mm, 3/8.

0 25.4 mm

Show calibrated outline Open in Finder

Measured neighbors

What sits beside V.

“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

9.6 mmmetric 0.3780 inΔ +0.024 mm 3/8fractional 0.3750 inΔ -0.051 mm 9.5 mmmetric 0.3740 inΔ -0.076 mm 9.7 mmmetric 0.3819 inΔ +0.124 mm 9.4 mmmetric 0.3701 inΔ -0.176 mm

Same seriesNEAREST NOMINAL ROWS

Uletter 9.347 mmΔ -0.229 mm Wletter 9.804 mmΔ +0.229 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

Vdrill bit size.

What sits beside V.

ASME.

V
drill bit size.