What size is a 15 64 drill bit?

Answered by Robert Flynn

A 15/64 drill bit is a fractional size drill bit that measures approximately 0.2344 inches in diameter. This size is commonly used in various applications, including woodworking, metalworking, and general drilling tasks.

When it comes to drill bit sizes, there are two main systems of measurement: metric and fractional. The metric system measures drill bit diameters in millimeters, while the fractional system uses fractions of an inch.

In the case of a 15/64 drill bit, it falls under the fractional system. The numerator, 15, represents the number of 64th parts of an inch, while the denominator, 64, indicates the total number of equal divisions within an inch. By dividing 15 by 64, we can calculate the decimal equivalent of this fraction, which is approximately 0.2344.

To further illustrate the size of a 15/64 drill bit, let’s compare it to some other commonly used sizes. A 1/4 drill bit, for example, has a diameter of 0.25 inches, which is slightly larger than a 15/64 bit. On the other hand, a 7/32 drill bit measures approximately 0.2188 inches in diameter, making it slightly smaller than a 15/64 bit.

It’s important to note that drill bit sizes can vary slightly between manufacturers, so it’s always a good idea to refer to a drill bit size chart or consult the specific product specifications to ensure accuracy.

In my personal experience, I have used 15/64 drill bits for various tasks such as drilling pilot holes for screws in woodworking projects. The size provides a good balance between strength and versatility, allowing for secure fastening while still accommodating various screw sizes.

A 15/64 drill bit is a fractional size bit with a diameter of approximately 0.2344 inches. It is commonly used in different applications and can be a useful addition to any drill bit collection.