Standard Drill Bit Size Chart
| UNC | DRILL (MM) | UNF | DRILL (MM) |
| 1.64 | 1.55 | 0.8 | 1.25 |
| 2.56 | 1.8 | 1.72 | 1.55 |
| 3.48 | 2.1 | 2.64 | 1.85 |
| 4.4 | 2.3 | 3.56 | 2.1 |
Full Answer
Which drill bit brand is best?
- Twist Bit is the most common to find, and it is used for general drilling into wood, light metal, and plastic. ...
- Brad Point Bit is excellent for drilling into wood. ...
- Spade Bit is significant for drilling holes with sizes from 1/4″ to 1 1/12″. ...
- Auger Bit – The wood-boring bit. ...
- Hole Saw is a large wood-boring and light metal which ranges from 1/2″ to 6″.
What are the best drill bits?
10 Best Drill Bit For Metal 14 February 2022
- Amazon Basics High Speed Steel Drill Set for Metal, Wood, & Plastic, 14
- Faithfull FAIBD14PRO Blacksmiths Professional Reduced Shank HSS Drill Bit 14mm. For: Hardened Alloy
- Monland 6 Pieces Step Drill Bit Set 1/4 Inch Hex Shank HSS Titanium
- SDTOOLS Premium Quality 14-20mm Reduced Shank 13mm HSS Cobalt 5% Metal Twist Drill
What size is a standard drill bit?
This final drill chart covers the standard bit sizes from 43/64 to 1 27/64. More About Drill Bit Sets and Sizing Some other helpful information to help you in your knowledge of drill bit sizes: Fractional Sizing Fractional sizing uses whole, half (1/2), quarter (1/4), eighth (1/8), sixteenths (1/16) and sixty-fourths (1/64).
What size drill bit to use for #10 wood screw?
Thus depending on the need, one must choose the proper drill bit. For example, the size of drill bit needed for a 10 size screw is one-eighth of an inch, and the size of the pilot hole is 7/64th of an inch. This article has more details on the size of drill bits needed.
What size is a number 10 drill bit?
Number Drill SizesDrillInchmm120.1894.80110.1914.85100.1934.9090.1964.9876 more rows
What size is a 10 mm drill bit?
Metric Tap and Drill Bit Size TableTapMetric DrillUS Drill10mm x 1.258.9mm11/32"10mm x 1.09.1mm-12mm x 1.7510.5mm-12mm x 1.510.7mm27/64"13 more rows
How big is a #10 hole?
Wood Screw Pilot Hole SizesScrew SizeHard WoodTapered BitStraight Bit#1013/64"9/64"#127/32"5/32"#141/4"11/64"12 more rows
Is 3/8 drill bit the same as 10mm?
3/8" bits have a nominal size being just ever so slightly under 10mm. You can't drill a hole of any size and put something in it the same size. It must be a bit smaller than the hole you drill.10-Oct-2011
How do I know what size my drill bit is?
Typical drill bits have markings somewhere on the shank above the threads. It's small, but it usually has the drill-bit diameter stamped into the metal; the number is written in fractions. For example, the markings may read: 1/4-inch, 3/6-inch or 25/32.
What is the drill size for M10 tap?
Tap SizeTap SizeDrill SizeM10 x 19.1mmM10 x 1.258.9mmM10 x 1.58.4mmM11 x 1.509.7mm34 more rows
Why are drill bits available in a wide range of sizes?
In caser you are wondering why drill bits are available in a wide range of sizes, it is simply to attain the precision that each project requires. For this reason, each tool uses a unique naming convention that includes numbers and letters, all with the hope of promoting accuracy.
Why do you need to pre drill holes?
Further, if you will be fastening several boards, the pre-drilling would help prevent the screws from breaking off or the material cracking as you work on it. When dealing with thick metal plates, the hole’s size should be equivalent to the core diameter’s size, while for the hardwoods, the hole should be equal to the screw’s minor diameter.
How Many Drill Bit Sizes Are There?
First things first. If you were to look at the most all encompassing collection of multi-purpose, twist-type bits, how many drill bit sizes would there be?
How Do You Know What Size Drill Bits You Need?
If you’re an average weekend-warrior, you’ve probably stared at a screw or bolt for a few moments and wondered what size drill bit you would need.
How to Convert and Find Equivalent Bit Sizes
You can use the drill chart that follows this section to help convert sizes, or you can do the math yourself.
Drill Chart
As promised, here are a few drill bit charts to help you quickly convert all standard drill bit sizes to their matching measurements.
More About Drill Bit Sets and Sizing
Some other helpful information to help you in your knowledge of drill bit sizes:
What are the sizes of drill bits?
Metric drill bit sizes: diameter of the bit in terms of standard metric lengths.#N#Letter drill bit sizes: the sizes are indicated in letters, from size A (the smallest) to size Z (the largest).#N#Number drill bit sizes: the sizes are indicated in numbers, range from size 80 (the smallest) to size 1 (the largest). Number and letter sizes are commonly used for twist drill bits rather than other drill forms.#N#Fractional drill bit sizes: the sizes are written as irreducible fractions. ANSI B94.11M-1979 sets size standards for jobber-length straight-shank twist drill bits from 1/64 inch through 1 inch in 1/64 inch increments.#N#Decimal drill bit sizes: written in number with 4 decimal places, equivalent to fractional-inch drill bit sizes
What is the difference between tapping and drilling?
Drilling is a process of producing a hole while tapping is a technique used to cut a thread inside a hole, so the drill bit and tapping tool are often used in sequential to fabricate CNC parts with thread holes.
