Tap Drill Size Chart

27 mm Drill Size

metric drill

27 mm 1.063 in 27.00 mm

A 27 mm drill measures 1.063 in. It taps 2 threads in this chart.

What a 27 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 27 mm drill taps, with the percent of thread each one gets and the published chart drill for comparison.
Thread % thread Chart drill Chart %
M30 x 3.5 66.0% 26.5 mm 77.0%
1-1/8-12 57.3% 1-3/64″ 72.1%

Drills either side

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27 mm drill: common questions

What size is a 27 mm drill?
1.063 inches, which is 27.00 mm. It is a metric drill.
What can I tap with a 27 mm drill?
2 threads: M30 x 3.5 at 66.0%, 1-1/8-12 at 57.3%.
What drill is next to a 27 mm?
Down: 1-1/16 in at 1.0625 in. Up: 28 mm at 1.1024 in.