# 16 Things That Are 2 Millimeters (mm) Thick

The millimeter is a unit of measurement for lengths and is used to measure smaller items. The prefix term ‘milli’ denotes the factor of one-thousandth. When recording millimeter measurements, you can abbreviate them as (mm).

When measuring the length, width, or thickness of stuff, 1 meter converts to 1000 millimeters. When recording the thickness of items, finding ones that measure 2 millimeters may take time. You can use a ruler or caliper for accurate measurements.

Without further ado, here is a list of things that are 2 mm thick. You can use it as a reference the next time you work with smaller items.

## 1. A Nickel

Nickel is a coin used as currency in the United States and is worth 5 cents. So the nickel coin is pretty common among the American people.

If you measure the thickness of a nickel, you will get 1.95 mm, which is 0.5 mm from 2 mm. So even though it is slightly off the 2-millimeter mark, it is still a great point of reference.

## 2. 2 Pennies

The United States one-cent coin (ȼ) is commonly referred to as the “penny” and is a currency unit that equals one-hundredth of the dollar.

Abraham Lincoln was the first historical figure engraved on a United States coin. This occasion was during his 100th birthday when he was used for commemorating the one-cent coin.

If you measure a penny, it is 1 mm thick. Therefore, if you need 2 millimeters, you need two coins.

## 3. Keyring

A keyring holds keys and any other small items. The keyring can be connected to a key holder or a keychain. Some people use these keyrings for decoration purposes.

Considering their versatility in use, they come in different sizes. The smallest key ring is around 2 mm and can hold around 8 keys. Keyrings can either be leather, plastic, acrylic, or metallic.

## 4. Allen Key

The Allen key/wrench comes from the Allen manufacturing company that produces hexagonal screws and wrenches. Therefore, the hex keys became Allen keys, and you can buy them in different sizes.

When you buy an Allen key set, one of them could be around 2 mm thick. Understanding the size of the key helps you determine the best screws you can use for fastening.

## 5. 20 Sheets of paper

Even though there are different paper categories, the average thickness is around 0.05-0.10 millimeters. These are somewhat thinner than the traditional materials used for writing. Therefore, if you stack 20 sheets of paper, they give a thickness of 2 millimeters.

The weight of the paper will, however, determine the thickness. Hence it is vital to confirm before you record your measurements.

## 6. 3 Credit Cards

Credit and debit cards must be the same sizes to fit in any machine. The standard card is 85.6 mm long, 53.98 mm wide, and 0.76 mm thick. This size perfectly fits wallets and pockets for easy carriage.

Therefore, if you want to calculate 2 millimeters using credit cards, you need to stack three of them.

## 7. Crayon Tip

Crayons are commonly available in libraries, schools, and other institutions where people can doodle. They are made from pigmented wax and can color papers.

Unfortunately, many people have used crayons without understanding how big the tip is. Crayons are short at only 3.5 inches, but the tips are about 2 mm thick. Some manufacturers may, however, build thicker tips for specific tasks.

## 8. Stainless Steel Wire

Stainless steel wire is a raw material for making springs, screws, metallic nets, cable wire, and other hardware. It makes filters, electronic parts, kitchenware, and fiber in complex applications.

These wires come in different dimensions; some thinner ones are around 2 mm thick. If you have a project that requires wires, you can use this measurement for reference.

## 9. Copper Wire

Copper wire is similar to stainless steel wire, only that it is used differently today. Copper wire is primarily used to generate and transmit power. Other applications include electronic circuitry and making electrical and telecommunications equipment.

Copper wires have different thickness sizes depending on what you intend to use them for. For example, most main electrical lines are about 2 millimeters thick.

## 10. Toothpick

A toothpick can be found in the kitchen or dining area, whether in hotels or at home. It can be made from wood, bamboo, plastic bone, or any substance carved with two pointed ends.

These items are available in different sizes, with the common thickness being 2 mm. This should be the standard because anything bigger could hurt your teeth.

## 11. Ruler

The ruler is a popular measuring device; most have imperial measurements on one edge and metric measurements on the other. A standard ruler is around 12 inches long, which is 30 centimeters.

On the other hand, the thickness may vary depending on the manufacturer and the material. The typical ruler thickness is around 1.5 mm to 2 mm.

## 12. House Key

The right key size will prevent you from ruining your lock because the key does not fit. Therefore, understanding the key sizes can help you set up the appropriate lock for a specific location.

Although there are several key sizes and designs to pick from, the common thickness should be around 2 millimeters. This only applies to the flat house keys.

## 13. Dowel Pin

Dowel pins are cylindrical pieces of metal used to secure machinery by holding pieces of materials together. They are great for aligning devices during assembly, especially in conjunction screws.

Dowel pins may be small or big, depending on where you want to use them. Some dowel pins are around 2 mm thick.

## 14. Banana Plug

A banana is a great source of potassium for the body, but the banana plug is not related to food. Instead, this plug gets its name from its resemblance to the fruit. It is used to finish off exposed ends of speaker wires, making them easier to plug into the speakers or receivers.

The size of the banana plug you choose depends on the speaker ports. The preferable size for most wire connections is around 2 millimeters thick.

## 15. Knitting Needle

A knitting needle/pin is a tool used by hand-knitters for making fabric. They are typically aluminum, wooden, or copper shafts with a tapering end. However, they are not as sharp as needed making them safe on the hands.

The thickness of knitting needles depends on the size of the yarn you make. The 2 mm knitting needle is great for most crochet projects.

## 16. Paper Board

Paperboard is the thinnest type of cardboard used for making cereal boxes, toilet paper rolls, etc. The paperboard is also called the carton or chipboard because it is smoother than corrugated fiberboard.

These boards come in different thicknesses, with 2 mm around the average size.

Thousands of things are 2 millimeters thick, but our list could only hold 16. These items are basic things you can find around your home. If you can access any of these, you can use them for referencing and estimating sizes.