What a needle threader does and why it matters

A needle threader is a small wire loop attached to your sewing machine that guides thread through the needle's eye without you having to hold it steady or squint at the hole. You lower the threader's loop through the needle, pass your thread through that loop, then pull the threader back out — the thread comes with it, already through the needle. It takes three seconds instead of three minutes of fumbling.

Most machines come with one built in, usually near the presser foot or on the side of the machine head. Some are metal, some plastic. The principle is the same on all of them. If your machine did not come with one, you can buy a standalone threader for a few dollars; it works the same way, just held in your hand instead of mounted on the machine.

Key Takeaways

  • Raise the presser foot and needle to their highest position before threading — the needle eye opens only when the foot is up.
  • Lower the threader's wire loop through the needle from front to back, then pass your thread through the loop.
  • Pull the threader back toward you; the thread follows through the needle and out the back.
  • If the thread does not go through, the needle may be bent, inserted backward, or the loop may have missed the eye — check all three before trying again.
  • A threader only works on needles that are already in the machine and correctly positioned; it cannot thread a needle you are holding in your hand.

Step-by-step threading with a built-in threader

Start by raising your presser foot all the way up. This is the metal arm that holds fabric down while you sew. When it is down, the needle eye closes slightly — you need it fully open to thread. Most machines have a lever on the back or side of the presser foot assembly; push or pull it until you hear or feel it click at the top.

Raise the needle to its highest point as well. Turn the handwheel (the large wheel on the right side of the machine) toward you until the needle is all the way up. This is not strictly required on all machines, but it makes the eye easier to access and is the safest position for threading.

Locate your threader. On most machines it is a small metal or plastic hook mounted on the machine head, usually to the left of the needle or just above it. Some machines have it on the right side. Check your manual if you cannot find it — the diagram will show exactly where yours sits.

Hold your thread spool in your left hand (or wherever your machine's thread guide directs it). Bring the thread end up and forward. Now lower the threader's wire loop down through the needle eye, from the front of the needle toward the back. The loop should pass cleanly through the hole. If it does not fit, the needle may be inserted backward or bent — remove it and check.

Once the loop is through the needle, pass your thread through that loop. Hold the thread end between your thumb and finger and guide it into the wire loop. You should feel it catch.

Pull the threader back toward you — away from the needle. The wire loop will slide back out of the needle, and your thread will follow it through the eye. The thread is now threaded. Let go of the loop and pull a few inches of thread toward you to make sure it is seated properly in the needle.

Using a handheld needle threader

A standalone threader works the same way but requires you to hold it. These are useful if your machine's built-in threader is broken, missing, or if you are threading a needle by hand before inserting it into the machine.

Hold the needle steady in one hand — either in the machine or in a needle holder if you are working off the machine. With your other hand, push the threader's wire loop through the needle eye from front to back, just as you would with a built-in threader. Pass your thread through the loop, then pull the threader back out. The thread comes with it.

The main difference is that you control the angle and pressure, so you have to be more careful not to bend the needle or miss the eye. If you are threading a needle that is already in the machine, follow the same presser-foot-up rule: raise it all the way before you start.

What to do when the threader does not work

If the thread does not go through the needle after you pull the threader back, stop and check three things. First, make sure the needle is inserted correctly — the flat side should face the direction your manual specifies (usually toward the back or toward you, depending on the machine). A backward needle will not thread. Second, look at the needle itself under good light. If it is bent, cracked, or has a burr on the eye, it will not accept thread. Replace it with a fresh needle.

Third, verify that the threader's loop actually passed through the needle eye. Sometimes the loop sits just outside the hole instead of going through it. Lower the threader again and watch carefully as it enters the needle. You may need to angle it slightly or guide it with your finger to make sure it goes all the way through.

If the threader is bent or the wire loop is cracked, it will not work. Inspect it for damage. If it is damaged and built into your machine, you can still thread by hand or use a handheld threader. If a handheld threader is damaged, replace it — they cost very little.

Why the presser foot position matters

The presser foot controls a small metal bar inside the machine called the presser bar. When the foot is down, this bar presses against the needle, and the needle eye narrows slightly. When the foot is up, the bar releases and the eye opens fully. This is why threading is nearly impossible with the foot down — the hole is too small for thread to pass through easily, and the threader loop may not fit at all.

This is also why you should always raise the presser foot before threading, even if you are in a hurry. Trying to force thread through a closed needle eye can bend the needle, fray the thread, or damage the threader. Raising the foot takes one second and prevents all of that.

Threading different needle types

Most household sewing machine needles work with a threader — universal needles, ballpoint needles, and stretch needles all have eyes that a standard threader can pass through. The threader works the same way regardless of needle size, as long as the needle is correctly inserted in the machine.

Some specialty needles, like very large embroidery needles or twin needles, may have eyes too large or shaped differently than standard needles. A standard threader may not grip the thread properly in these cases. If you are using a specialty needle and the threader does not work, thread by hand or check whether your machine came with a specialty threader designed for that needle type.

Frequently Asked Questions

Can I use a needle threader on a needle I am holding in my hand?

A handheld threader works on a needle you are holding, but a built-in machine threader does not — it only works on needles already inserted in the machine. If you want to thread a needle before putting it in the machine, use a standalone threader or thread by hand.

What if the threader loop keeps missing the needle eye?

The needle may be too small for your threader, or the threader may be bent. Try angling the threader slightly as you lower it, and watch to make sure the loop enters the eye straight on. If it still misses, check whether the needle is the correct size for your machine and whether the threader itself is bent or damaged.

Does the needle have to be at the top position to use a threader?

Not always, but it helps. Raising the needle to its highest point makes the eye easier to access and is the safest position. Some machines thread fine with the needle partway down, but starting at the top is the most reliable method.

Can a bent needle be threaded with a threader?

A bent needle will not thread properly with a threader or by hand. The bent eye will not accept thread smoothly, and you risk damaging the threader or fraying the thread. Replace the bent needle with a new one before threading.

What if my machine does not have a built-in threader?

You can buy a handheld needle threader for a few dollars at any fabric or craft store. It works the same way as a built-in threader — you just hold it in your hand instead of it being mounted on the machine. Alternatively, you can thread by hand, though it takes longer.