Letter Drill Bit Sizes. Ansi size drill bit chart. Iso (metric size drills) & conversion to inches. Furthermore there are a number of different scales used for measuring the diameter.

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This chart shows the diameters of letter gauge drills size a (the smallest) to size z (the largest). For drill bit system of measurement. We talk about drill bit sizes, iy includes the metric conversion table and also a drill size chart.

Store and organize drill bits so they stay in good working condition and don't go missing.

The information available from our sources is usually sufficient for all computer related drill. Furthermore there are a number of different scales used for measuring the diameter. List of letter size drill bits product specs, datasheets, manufacturers & suppliers. A drill bit size chart is very convenient, so here you go. This chart shows the diameters of letter gauge drills size a (the smallest) to size z (the largest). Having the right drill bit is critical when you're a carpenter or contractor. The classification system currently in use was developed by the international association of drilling contractors (iadc). Because of differences in numbering systems, some conversions are if all else fails, you may want to use our tap drill size calculator.