These drill sizes are readily available OTS. In general, there are 3 categories of common imperial drill sizes: fractional (in 1/64" increments), lettered (A-Z), and numbered (1-80).

Drill Size Chart.

The below graph shows that the thrust force on the lip of the drills is the same for the EX-Gold drill versus a similar drill without thinning, but that the drill with the thinning (i.e. reduced area of the …

PTF N. SF Pi.

ICS Cutting Tools has all listed drill sizes, as well as other metric and special decimal sizes. They are available in a variety of types, styles, materials and special coatings.

Aug 2, 2016 · Size in inches Size Designation 0.28350.2854 0.2874

Drill Chart .