metric comparison size · nominal diameter

1.1 mm
drill bit size.

A 1.1 mm bit measures 0.0433 in across (1.100 mm).

The metric diameter is the generated reference value; inches are a conversion. Commercial set contents vary.

Diameter conversion verified

Calibrated relative diameter · 1 in reference

1.1 mm · metric

0.0433 in

1.100 mm

Designation1.1 mmmetric

Inch decimal0.0433nominal

Metric conversion1.100millimetres

Where this size sits from 0 to 1 inch

1.1 mm · 1.100 mm on a zero to 25.4 millimetre scale. Neighbor marks: #57, #58.

0 25.4 mm

Show calibrated outline Open in Finder

Where this bit is specified

What 1.1 mm is for.

1.1 mm is the cutting-tap drill for the thread below— usually the reason this size gets looked up. Engagement is calculated from the basic 60° profile; open a thread for its published row, evidence, and limits.

Cutting-tap rows naming 1.1 mm CUT TAPS ONLY · CALCULATED ENGAGEMENT

M1.4 × 0.3 Metric coarse · rule-of-thumb row 77.0% calculated thread engagement

Measured neighbors

What sits beside 1.1 mm.

“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

#57number 0.0430 inΔ -0.008 mm #58number 0.0420 inΔ -0.033 mm #59number 0.0410 inΔ -0.059 mm #56number 0.0465 inΔ +0.081 mm #60number 0.0400 inΔ -0.084 mm

Same seriesNEAREST NOMINAL ROWS

1.2 mmmetric 1.2 mmΔ +0.100 mm 1 mmmetric 1 mmΔ -0.100 mm

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

1.1 mmdrill bit size.

What 1.1 mm is for.

What sits beside 1.1 mm.

Drill Bit Size Chart.

1.1 mm
drill bit size.