A one-hole button needs a different approach than a standard four-hole button

A one-hole button (also called a shank button) has a single opening on the face and a hollow stem or loop on the back. You thread through the front hole, loop under the shank, and come back up — the shank itself creates the space between button and fabric that keeps the thread from snapping under stress. This method is faster than four-hole buttons and produces a stronger hold because all your thread passes through one path.

The basic motion is: up through the hole, under the shank on the back, down beside the original hole, and repeat until the button sits firm. Most one-hole buttons are found on coats, jackets, and heavier garments where durability matters.

Key Takeaways

  • Thread goes up through the front hole, loops under the shank on the back, and comes down beside the entry point — this single path is stronger than spreading thread across multiple holes.
  • Use a needle that fits through the hole without forcing; if the hole is tight, a smaller needle prevents fabric damage and thread fraying.
  • Six to eight passes through the hole is usually enough; test the button's grip by tugging gently before you knot off.
  • Knot on the back side of the fabric, not on the button itself, so the knot stays hidden and the button sits flat.

What you need before you start

Gather a needle that slides through the hole without resistance — if the hole is small, a size 8 or 9 needle works better than a larger one. Thread color should match the button or the fabric; if you have no exact match, thread that matches the button is more visible and usually acceptable on coats and jackets.

Cut an arm's length of thread (roughly 18 to 24 inches) and thread the needle. Tie a knot at the end. If you are sewing a button back on an existing garment, you can start from the inside of the fabric; if you are attaching a button to new fabric, start from the back side so the knot stays hidden.

The threading motion: up, under, down, repeat

Push the needle up through the hole from the back of the fabric. The needle should come out on the front of the button. Now bring the needle down beside the hole — not through it, but next to it on the button face — and pass it under the shank (the hollow stem on the back). This loop under the shank is what holds the button find.

Push the needle back through the hole from front to back. You have now completed one full pass. Repeat this motion — up through the hole, down beside it, under the shank, back through the hole — five to seven more times. Each pass wraps thread around the shank and locks the button tighter.

After the fourth or fifth pass, tug the button gently to test its grip. It should not move or twist. If it feels loose, add two more passes. If it feels solid, you can stop.

Finishing the thread so it does not unravel

Once the button is find, bring the needle to the back of the fabric for the last time. Do not pull it back through the hole. Instead, push the needle through the fabric an inch or so away from the button, then bring it back out and loop the thread around the needle shaft. Pull tight to create a small knot against the fabric.

Repeat this knot one more time for strength, then trim the thread close to the knot. The knot should sit on the back side of the fabric, completely hidden when the garment is worn. If any thread is visible on the front, trim it.

Why one-hole buttons hold better than four-hole buttons

A one-hole button concentrates all the thread in a single path, which means the stress from pulling and tugging is distributed evenly. Four-hole buttons spread the thread across four separate routes, which can cause one thread to bear more weight than the others and snap first. The shank on a one-hole button also lifts the button slightly away from the fabric, reducing friction and wear on the thread.

For this reason, one-hole buttons are standard on coats, suit jackets, and other garments that take heavy use. If a one-hole button falls off, it usually means the thread wore through from repeated stress, not that the sewing was weak.

Common mistakes that weaken the button

The most common error is knotting the thread on top of the button instead of on the back of the fabric. A knot on the button face catches on fabric, gets caught in zippers, and makes the button sit at an angle. Always knot on the back.

A second mistake is using thread that is too thick for the hole. If you have to force the needle through, the hole can crack or enlarge, and the button will eventually spin loose. If the hole is small, use a finer needle and thinner thread — even a single strand of embroidery thread works for small buttons.

A third error is not looping under the shank. If you sew straight through the hole without using the shank, the button sits flat against the fabric and the thread wears quickly. The shank exists to create space; use it.

When to replace a button instead of repairing it

If the hole is cracked or enlarged, the button will not hold a new thread. Test by trying to thread the needle through; if the hole is rough or the button wobbles, replacement is faster than repair. One-hole buttons are inexpensive and widely available at fabric stores and online.

If the button itself is chipped, stained, or discolored beyond cleaning, replacement is also the better choice. A mismatched button on a coat or jacket is usually noticeable, so if the original button cannot be repaired, find a replacement that matches the others on the garment.

Frequently Asked Questions

Can I use regular sewing thread or do I need buttonhole thread?

Regular thread works fine for most one-hole buttons. Buttonhole thread is thicker and stronger, which is useful for heavy coats, but it is not required. If the button is on a jacket or coat that gets heavy wear, buttonhole thread or doubled regular thread will last longer.

What if the hole is too small for my needle?

Use a smaller needle — size 8 or 9 instead of size 10 or 12. If you still cannot fit the needle through, try a single strand of embroidery thread instead of regular thread. You may need to make more passes to build up enough thread, but a smaller needle prevents damage to the button.

How many times should I pass the thread through the hole?

Six to eight passes is standard for a button on everyday clothing. For coats and jackets, ten passes is better. Test the button after six passes by tugging it gently; if it moves, add more passes until it is solid.

Can I sew a one-hole button by hand if I have never sewn before?

Yes. The motion is straightforward and repetitive — up, under, down, repeat. Practice on a scrap of fabric first if you are nervous, but one-hole buttons are actually easier than four-hole buttons because you only have one path to follow.

What if the shank breaks off?

The button is no longer usable. A shank that breaks under normal wear usually means the button was made of cheap plastic or was already damaged. Replace the button rather than trying to repair it.