Threadless vs Internally Threaded Body Jewelry: Which Should You Choose?

If you’ve spent any time looking at body jewelry, you’ve run into these terms. Threadless. Press-fit. Internally threaded. Externally threaded. They describe how the decorative top attaches to the post: and while this sounds like a minor technical detail, it genuinely affects how safe the jewelry is for healing piercings, how easy it is to change, and how long it lasts.

The Three Systems, Explained Simply

Externally Threaded

The screw threads are on the outside of the post. You screw the decorative top directly onto the end of the post. Think of a standard bolt and nut.

The problem: when inserting or removing, those rough external threads are passing through your piercing channel. In a healing piercing, they slice through the fragile fistula tissue every single time. Even in healed piercings, external threads can irritate the channel over time. External threading is the standard on cheap jewelry from fast-fashion brands and piercing guns: it’s cheap to manufacture. Reputable piercers avoid it entirely.

Internally Threaded

The threads are inside the post: the post is hollow at one end and the decorative top has a small threaded pin that screws into it. The post itself is completely smooth on the outside. When inserting, only smooth metal contacts your skin and the piercing channel.

Internally threaded jewelry from quality manufacturers (Anatometal, BVLA, Industrial Strength) is precision machined to very tight tolerances. It’s highly secure: you’re not going to lose a top accidentally: and the mechanical connection is reliable for longer posts like nipple and navel barbells.

Threadless (Press-Fit)

No threading at all. The decorative top has a small straight pin that is slightly bent. You insert the pin into the hollow post, and the tension from that bend holds the top in place. To change tops, you simply pull the top straight out and press a new one in.

The threadless system was popularised in the piercing industry partly because it makes changing the decorative top exceptionally easy: without unscrewing anything through the piercing channel. It’s also arguably simpler for clients to change their own jewelry after healing.

Which Should You Actually Use?

For healing piercings, both internally threaded and threadless are completely appropriate. The choice often comes down to the type of piercing and your lifestyle.

Choose threadless if: you want to build up a collection of tops and mix-and-match looks without multiple piercings, or if you want to change your jewelry yourself easily post-healing. It’s the preferred system for small cartilage piercings: helix, tragus, conch, flat: and nostril piercings, where the tops are small and changing jewelry often is common.

Choose internally threaded if: you want maximum security, you wear the same jewelry for long periods without changing it, or you have a longer-post piercing like a nipple or navel where the mechanical rigidity matters more. Industrial piercings are almost always done with internally threaded barbells.

Does It Matter for Healed Piercings?

Less so. Once a piercing is fully healed, the fistula is keratinised and significantly more robust. Externally threaded jewelry from quality brands (not fast-fashion junk) is less of a concern in fully healed piercings, though it’s still the least preferred option. If you’re buying jewelry for a fully healed piercing, both internally threaded and threadless from any reputable brand are perfectly fine choices.

Where the system difference starts to matter again in healed piercings is with very frequent jewelry changes. If you’re swapping tops weekly, threadless makes your life much easier and causes less mechanical stress than repeatedly screwing and unscrewing a threaded connection.

Top Brands to Know

Threadless: NeoMetal, Anatometal, BVLA, Industrial Strength, Buddha Jewelry Organics. All produce threadless tops interchangeable with each other’s posts for most gauges.

Internally Threaded: Anatometal, Industrial Strength, BVLA, Neometal (also does internal). All are implant-grade titanium or solid gold.

See our Titanium vs Gold guide for a full breakdown of which material to use when.

Frequently Asked Questions

My threadless top keeps falling out. What’s wrong?

The bend in the pin isn’t providing enough tension, or it’s been straightened out over time from repeated insertion. A piercer can rebend the pin, which restores the tension. You can also do this very carefully yourself with flat-nose pliers: bend the pin very slightly more than it currently is, test the tension, repeat until it stays put.

Can I use any threadless top with any threadless post?

Generally yes, across most quality brands at the same gauge. A 16G threadless top from NeoMetal should fit a 16G threadless post from Anatometal. There are occasional exceptions: always test fit before assuming compatibility, and when in doubt, ask your piercer or the retailer.

Is threadless less secure? Could the top come off without me noticing?

With correctly set tension, threadless tops are very secure for everyday wear. The main scenario where tops come off is excessive snagging on fabric or a direct hard blow to the jewelry. If you’re playing contact sports or doing activities where this is likely, internally threaded gives you a more positive mechanical lock.