Drill Bits

Learn exactly what size drill bit you need for every drilling scenario you encounter.

What Size Drill Bit for a 4” NPT Tap?

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The 4” NPT tap is one of the biggest pipe taps you can use. 4” NPT taps are generally made with carbon steel or high-speed steel. If you want to know what size drill bit a 4” NPT tap is, read further. What Size Drill Bit for a 4” NPT Tap? A 4” NPT Tap … Read more

What Size Drill Bit for a 3-1/2” NPT Tap?

Green and black cordless drill placed in a table

The 3-½” NPT tap is a carbon steel pipe tap mainly used for cleaning or re-threading damaged or jammed pipes. 3-½” is one of the biggest NPT taps around. If you want to know what size drill bit for a 3-½” NPT tap is, I got you covered. What Size Drill Bit for a 3-1/2” … Read more

What Size Drill Bit for a 2-1/2” NPT Tap?

Man holding a green Bosch cordless drill

The 2-½” NPT tap is a common tap mainly used for cleaning or re-threading damaged or jammed pipes. 2-½” NPT taps are generally made of carbon steel and are usually heavier than most taps. If you want to know the size drill bit for a 2-½” NPT tap, read further. What Size Drill Bit for … Read more

What Size Drill Bit for a 1-1/4” NPT Tap?

Man replacing a drill bit in a drill

The 1-¼” NPT tap is a pipe tap mainly used for re-threading damaged or jammed pipe threads. 1-¼” NPT taps are generally made of steel and are usable for both ferrous and non-ferrous materials. To know what size drill bit for a 1-¼” NPT tap is, read further. What Size Drill Bit for a 1-1/4” … Read more

What Size Drill Bit for a 3” NPT Tap?

Various kinds of drill bits lined upright

The 3” NPT tap is a large pipe tap generally used for cutting screw threads in a nut or a hole. 3” NPT taps are usually made of steel and are larger than most taps. To know more about what size drill bit for a 3” NPT tap is, read further. What Size Drill Bit … Read more

What Size Drill Bit for 1/4” NPT Tap?

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The ¼” NPT tap is a small pipe tap used for cutting internal threads in pipes. ¼” NPT taps are generally made of steel and are usually heavier than most taps If you want to know what size drill bit for a ¼” NPT tap is, read further. What Size Drill Bit for 1/4” NPT … Read more

What Size Drill Bit for a #6 Screw?

Different kinds of drill bits, screws and other woodworking tools are placed on a table

#6 screws are part of the standard screw sizes. They are very versatile and work for most wood working projects. If you don’t know what size drill bit you should use for a #6 screw, you definitely should know if you’re into heavy-duty use. What Size Drill Bit for a #6 Screw? There are two … Read more

What Size Drill Bit for #2 Screw?

Drill with an attached drill bit is placed on a table alongside different woodworking tools and a floor plan

#2 screws are one of the smallest screws around. If you don’t know what size drill bit for a #2 screw, you should know if you’re into very small woodcrafts. What Size Drill Bit for #2 Screw? When using a #2 screw, you will want to use a 1/16 inch drill bit. Unlike other screw … Read more

What Size Drill Bit for a #7 Screw?

Man using a drill to create a hole in a wall

The list of standard screw sizes does not include #7 screws. They are not utilized frequently. If you’re into heavy-duty use, you should know what size drill bit to use for a #7 screw. What Size Drill Bit for a #7 Screw? Depending on the size of the pilot hole in the chosen wood and … Read more

What Size Drill Bit for a #18 Screw?

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#18 screws aren’t part of the standard screw sizes. They are somewhat uncommon, are fairly large, and have flat heads. If you do end up using one though, it’s important to know the proper size drill bit to select. What Size Drill Bit for a #18 Screw? When working with a #18 screw, use a … Read more

What Size Drill Bit for a #16 Screw?

Rusty screw standing upright on a table

#16 screws are not very common to use and are fairly large. If you don’t know what size drill bit to use for a #16 screw, take a look below before starting your next woodworking project. What Size Drill Bit for a #16 Screw? Depending on whether the targeted wood is softwood or hardwood, a … Read more

What Size Drill Bit for a 12-24 Tap?

Drill, box of screws and other tools on a wooden table

12-24 taps are generally used for making new threads or re-thread damaged threads. If you’re here, you’re probably looking for what size drill bit for a 12-24 tap. It’s important to use the right drill bit size so the fit and function are correct. What Size Drill Bit for a 12-24 Tap? A 12-24 tap … Read more