A # 30 drill bit is 0.1285 inch, or fractionally more than a 1/8 bit.
.0995"
Depends on the diameter of the conduit. Try for 1/4" larger diameter drill bit.
The standard size of a 6mm drill bit is 6 millimeters in diameter.
The thinnest drill bit available for purchase is typically around 0.0135 inches in diameter, also known as a 80 drill bit.
A hand drill is scommonly used for holes under 1/4 in in diameterANS 2 - The diameter is simply the width of the drill bit from side to side.
With a micrometer.
Drill bits not only come in fractional number sizes they also come in letter sizes. The F size drill bit is .257 thousandths of an inch in diameter. A 1/4 inch drill bit is .250 thousandths of an inch in diameter, so size F is .007 thousandths of an inch bigger than a 1/4 inch drill bit.
A step bit is an angled bit which can drill several different diameter holes, depending on how deep you push it. Electricians use them often for drilling into panels. You can find them in the electrical section at your closest building store. Expect to pay 30 to $50 for a good one.
For all practical purposes an 8mm drill is equal to 5/16 inch.
The recommended 5 drill bit size for drilling holes in metal is 0.2055 inches in diameter.
To determine the correct drill bit size for a project, you should refer to the instructions or specifications provided for the project. Additionally, you can use a drill bit sizing chart or measure the diameter of the screws or fasteners you will be using to select the appropriate drill bit size.
The measurement of a drill bit is taken across it's diameter. They go from very tiny, right up to inch sizes and are measured in metric or SAE,