Tap Drill Size Chart

9.1 mm Drill Size

metric drill

9.1 mm 0.3583 in 9.10 mm

A 9.1 mm drill measures 0.3583 in. It taps 2 threads in this chart.

What a 9.1 mm drill taps

Every thread this drill cuts between 50% and 85% of thread, deepest first. Outside that band it is the wrong drill for the job, so nothing below that line is listed.

Threads a 9.1 mm drill taps, with the percent of thread each one gets and the published chart drill for comparison.
Thread % thread Chart drill Chart %
M10 x 1 69.3% 9 mm 77.0%
M10 x 1.25 55.4% 8.8 mm 73.9%

Drills either side

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9.1 mm drill: common questions

What size is a 9.1 mm drill?
0.3583 inches, which is 9.10 mm. It is a metric drill.
What can I tap with a 9.1 mm drill?
2 threads: M10 x 1 at 69.3%, M10 x 1.25 at 55.4%.
What drill is next to a 9.1 mm?
Down: T at 0.358 in. Up: 23/64 in at 0.3594 in.