How are drill bits measured UK?
How are drill bits measured UK?
Metric Drill Bit Sizes Metric drill sizes are used primarily in Europe and use metric units to measure the drill bit diameter. There are a variety of standards used to define drill sizes, the most common one in the UK is the British Standard BS 328 set which includes twist drill bit sizes between 0.2 mm and 25 mm.
What size is a number 40 drill bit?
Number Size Drills
| No. | Dia. |
|---|---|
| 37 | .1040 |
| 38 | .1015 |
| 39 | .0995 |
| 40 | .0980 |
What is the standard drill size in the UK?
There are a variety of standards used to define drill sizes, the most common one in the UK is the British Standard BS 328 set which includes twist drill bit sizes between 0.2 mm and 25 mm. BS 328 drill sizes are defined as shown in the drill size chart below:
What is a metric drill bit size?
The metric system uses the thread pitch, which is the distance between threads, measured in millimeters. Metric drill bit sizes: diameter of the bit in terms of standard metric lengths. Letter drill bit sizes: the sizes are indicated in letters, from size A (the smallest) to size Z (the largest).
What does the drill size chart show?
Drill Size Chart. The drill size chart provides a list of standard size drill bits in several measurement systems, including fractional, metric, wire gauge number, and letter. The decimal equivalents of the diameters are shown in both English and Metric units. Fractional sizes are measured in inches,…
What are drdrill bits and how do they work?
Drill bits come in various sizes and shapes. They are attached to the drill, which, when switched on, rotates to power through the workpiece, creating holes of circular cross-section. To use them, insert the upper end, also known as the shank, into the chuck in the drill.
