The Complete Guide to Serger Needles: Types, Sizes, and When to Replace

Serger needles are the least expensive, most important component of your machine. A $2 needle can make the difference between perfect stitches and a machine that skips, breaks thread, and drives you crazy. Yet most serger owners don't give needles a second thought until one breaks. Here is everything you should know.

Which Needle System Does Your Serger Use?

Not all sergers use the same needles. Using the wrong needle system will cause skipped stitches and can damage your machine. Here are the most common serger needle systems:

• HAx1 (also called 15x1 or 130/705H) — used by most home sergers from Brother, Babylock, Juki home models, Janome, and many Singers. This is the same system used by most home sewing machines
• ELx705 — used by some older European sergers and some Bernina models. Slightly different shank dimensions than HAx1
• DCx1 — industrial needle system used by Juki industrial sergers
• BLx1 — used by a few Babylock sergers

Check your manual. If you don't have the manual, bring your old needle to a sewing shop and match it. Guessing is expensive.

Needle Sizes and When to Use Them

Serger needles are sized by two numbers: the European size (e.g., 80) and the American size (e.g., 12). You will see them on the package as 80/12, 90/14, etc. Here is a quick reference:

The rule of thumb: the needle should be large enough that the thread passes freely through the eye, but not so large that it leaves visible holes in the fabric.

Needle Types Beyond Universal

Universal needles work for many projects, but specialty needles exist for a reason:

• Stretch needles — have a special scarf design that prevents skipped stitches on knits and stretch fabrics. If you serge a lot of knits, these are worth investing in
• Microtex/Sharp needles — extra-sharp point for silk, microfiber, and densely woven synthetics. Produces a very clean puncture
• Jeans/Denim needles — reinforced shank and a sharp point for penetrating heavy fabrics without bending
• Leather needles — have a cutting point rather than a piercing point. Only use on non-woven materials
• Metallic/Embroidery needles — larger eye and a special coating to reduce friction with metallic and specialty threads

How to Know When to Replace Your Serger Needles

Do not wait for a needle to break. A dull needle damages fabric, creates skipped stitches, and increases wear on the looper system. Replace needles:

• Every 8-10 hours of sewing time — set a timer if you need to. Needles are cheap
• When you hear a popping sound as the needle penetrates fabric — it should be nearly silent
• When stitches start skipping after tension and threading have been verified
• If the needle point catches on your fingernail — run it across your nail. A sharp needle glides; a dull one catches
• After any needle strike — if the needle hits a pin, a zipper, or the throat plate, it's done. Do not try to straighten a bent needle

Storing Your Needles

Needles come in cases for a reason. Loose needles in a drawer get dull from bumping against each other. Keep them in their original case or a labeled needle organizer. Write the date you opened the package on a piece of tape — needles don't have an unlimited shelf life, and the coating that reduces friction can degrade over years.

Our Go-To Needle Brands

We use and recommend:

• Schmetz — consistent quality, widely available, excellent for most applications
• Organ — factory-installed on many Japanese machines, reliable and affordable
• Klasse — good budget option in bulk packs

Universals from these three brands will cover 90% of what you do. Add a pack of stretch needles and a pack of jeans needles, and you're set for nearly any project.

Need your serger serviced? We check needle condition as part of every tune-up. Upload photos for a $50 diagnostic quote → or call us at (888) 874-4988.