Letter Size Drill Bit Chart. Drill bits are the cutting tools of drilling machines. Number and letter sizes are in common use in the us, and to a lesser. A drill bit size chart is very convenient, so here you go.
This table is the chart for converting and identifying various drill bit sizes.
Iso (metric size drills) & conversion to inches. Fract size # size letter size metric size decimal there are different drill bit size charts because there are different ways to measure drill bits, and fractional size drill bits are sized in fractions of an inch, for instance, 1/8 inch, 1/4 inch, 1/2 inch, and. Letter sizes are imperial drill bit sizes designated a (smallest) to z (largest). How many drill bits are there? Api standards, as established by the american petroleum institute, enable drilling professionals the world over to communicate clearly. Today, we'll cover a drill bit size chart, so you can ensure you always have the right tool for the job. Drill bits are the cutting tools of drilling charts like this, printed at poster size, are widely posted on machine shop walls for handy reference number and letter sizes are commonly used for twist drill bits rather than other drill forms, as the. Centre drill bit sizes these specialist drill bits are used for drilling centreholes at two different angles, 60 degrees and90 degrees.
