MODRATEC Useful Data (otherwise known as MUD) is a series of pages containing helpful information particularly relevant to rail modellers. The tables on this page use our easy-to-compare format to show drill diameters of standard size imperial, number, letter, and metric drill bits.

Comparative Standard Drill Sizes

The tables below show the comparative size of standard drill bits.

Imperial 1/64" to 1/2"
Number 1 to 80
Letter A to Z
Metric 0.20mm to 12.70mm

Revised and extended 09-Nov-2003.

Tell us about an error.

Drill Sizes 1 Drill Sizes 2 Drill Sizes 3 Drill Sizes 4 Drill Sizes 5 Drill Sizes 6 Drill sizes 7 Drill sizes 8 Drill sizes 9 Drill sizes 10

^Top

For affordable and effective Web Hosting, MODRATEC uses and recommends Hosting Bay

Browse with
security on

Useful Data
MUD Index

Web Hosting

WIT Products

... your Premium Kits are a significant advance and will bring interlocking to the hobbyist rather than the engineer. Well done and I hope that orders reflect the change. (Steve)