What Size Drill Bit for 10 32 Tap


by Hannah Evert


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There are a few things to consider when determining the size of drill bit needed for a10-32 tap. The first is the thread count, or TPI (threads per inch). A 10-32 tap will have 32 threads per inch.

The second thing to consider is the material being tapped. Softer materials like aluminum require a smaller drill bit than harder materials like steel. Thirdly, one must decide what type of fit is desired for the finished product.

A loose fit will require a larger drill bit than a tight fit. Finally, take into account the depth of the hole that needs to be drilled. Deeper holes will need longer bits, so it is important to have the proper length of bit on hand.

There are a lot of variables to consider when deciding what size drill bit to use for a 10-32 tap. The first thing to think about is the thread count. A 10-32 tap has 32 threads per inch, so you’ll need to use a drill bit that’s slightly smaller than that.

If you’re not sure about the thread count, you can always measure the diameter of the tap and subtract a couple of thousandths of an inch. Another thing to consider is the type of material you’ll be tapping into. Softer materials like wood or plastic will require a smaller drill bit, while harder metals will need a larger one.

You also have to take into account the depth of the hole you’re trying to create. Deeper holes will obviously need larger drill bits. Finally, it’s always a good idea to err on the side of caution and go with a slightly smaller drill bit than you think you need.

It’s much easier (and cheaper) to enlarge a small hole than it is to try and fix a big one!

How to match a drill to thread tap size

21 Drill Size

21 Drill Size The 21 drill size is the second smallest standard drill bit size. It is .0315 inches in diameter and can be used to create small, precise holes in a variety of materials.

This size drill bit is often used for electronics projects or for drilling very small holes in wood or metal.

What Size Drill Bit for 10 32 Tap

Credit: www.mscdirect.com

What Size is a 10-32 Tap?

A 10-32 tap has a major diameter of 0.190 inches (4.8 mm) and a pitch of 32 threads per inch (TPI). The tapping drill size for a 10-32 tap is 0.164 inches (4.2 mm).

What Size Hole Do I Drill for a 10-24 Tap?

Assuming you are talking about metric, a 10-24 tap is close to size M4x0.7. The drill bit should be slightly smaller in diameter than the thread’s major diameter (10 mm). In general, it is good practice to use two sizes smaller drill bit for metric taps larger than M6x1.

How Do I Know What Size Hole to Drill for Tapping?

When it comes to drilling a hole for tapping, size is everything. The hole you drill must be just big enough for the tap to fit through – no more, no less. But how can you be sure you’re drilling the right size hole?

There are a few different ways to go about it. One option is to use a sizing chart specific to taps. These charts list the recommended hole sizes for various taps, based on their diameter and pitch (the distance between threads).

Another option is to use a tool known as a “tap drill.” This is a special drill bit that’s designed to create holes of the perfect size for tapping. To use one, simply select the correct bit for your tap (based on its diameter and pitch), then drill away.

Of course, you can also eyeball it. If you’re experienced with using taps, you may be able to estimate the right size hole just by looking at the tap itself. However, this isn’t always accurate, so it’s best reserved for cases where you don’t have access to a sizing chart or tap drill.

In short, there’s no single answer to the question of how to know what size hole to drill for tapping. It depends on what resources you have available and how much experience you have with using taps. Whichever method you choose, just be sure that the hole you drill is exactly the right size – no more and no less – before proceeding with tapping.

What Size is a #10 Tap?

A #10 tap is a 1/4″ – 20 UNC (Coarse) thread. The O.D. of the tap is .365″ and the major diameter of the thread is .250″.


When it comes to choosing the right size drill bit for a 10-32 tap, there are a few things you need to keep in mind. First, the diameter of the drill bit should be slightly larger than the major diameter of the tap. Second, you need to take into account the depth of the hole you’re drilling.

And third, you need to factor in the type of material you’re tapping into. With all that said, a good rule of thumb is to use a 1/16″ drill bit for a 10-32 tap.

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