HEX DRILL BIT 21MM - 4932 3995 72

Drill bit sizes are written as irreducible fractions . So, instead of 78/64 inch, or 1 14/64 inch, the size is noted as 1 7/32 inch. Below is a cart providing the decimal-fraction equivalents that are most relevant to fractional-inch drill bit sizes (that is, 0 to 1 by 64ths). (Decimal places for . If you know the size of the screw, you can locate the size of the drill bit by looking at the opposite end from the sharp point of the bit. It's likely engraved there. Standard metric sizes are defined in ISO 2936:2014 "Assembly tools for screws and nuts —Hexagon socket screw keys", also known as DIN 911. The full set of defined sizes are: 0.7 mm, 0.9 mm, 1.3 mm. 1.5 to 5 mm in 0.5 mm increments. They're great for being able to be quickly swapped out if you an adapter, and even without an adapter that hex shank is a lot easier for your drill chuck to grab onto when using very small bits like 1/16” & smaller. You'll see a list of numbers from to 10 or 20. These are used to set the clutch to deliver a torque range. The higher the number on the collar, the higher the torque and the larger the fastener that can be driven. To adjust your clutch, align the arrow to a lower setting and start driving a screw. Take a loose screw and compare it to the size of the bit you need to use, using the screw's core rather than its flute. A bit that is very slightly smaller than the screw will ensure a proper fit. Choosing a bit that is too small means that the screw will get stuck so take care to choose carefully. In hex, four digits of a binary number can be represented by a single hex digit. Dividing a binary number into 4-bit sets means that each set can have a possible value of between 0000 and 1111, allowing 16 number combinations from 0 to 15. With the base value as 16, the maximum value of a digit is 15.