What size is a letter D drill bit?

Answer According to the comprehensive drill size charts found on and, a letter "D" drill bit measures 0.246 inches, which is the equivalent of 6.2484 millimeters. A "D" bit ... Read More »

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What size is the letter o drill bit?

The drill bit size designated by the letter "o" is 0.3160 inches in diameter. This size is one derived from the U.S. standard of measurements and roughly translates to 20/64 of an inch.References:N... Read More »

How to Drill Very Small Holes with Wire Size Drill Bits?

Drilling small holes with wire-sized drill bits can be especially difficult. The smaller the drill bit, the more likely it is to break. You must be especially careful to keep small drill bits cool,... Read More »

What size drill bit is used to drill sea glass?

A special type of drill bit is ideal when working with and drilling sea glass. For sea glass drilling projects, a diamond drill bit is the best choice. The diamond drill bit should have a ball ti... Read More »

What size is a #50 drill bit?

A #50 drill bit measures .07 inches in size, according to Wood Central. When converted to the metric system, this equals roughly 1.778 mm. The next largest size drill bit is the #49, which measures... Read More »