Two ways to attach an end
A lot of body jewelry has a removable end: a bead, gem or disc that attaches to a post. The way that end is held on falls into two broad systems. In threaded jewelry, the end screws onto the post. In threadless jewelry, a pin slides into a hollow post and is held by tension. Both are common, and each has its own strengths. This article is general information, and a licensed piercer can advise on what suits your piercing.
Threaded jewelry
Threaded jewelry has screw threads, like a tiny bolt and nut. There are two types.
External threading
The threads are cut on the outside of the post. The end screws on over them. Because the rough threads pass through the piercing whenever the jewelry is inserted or removed, they can scrape the channel. This makes external threading generally less preferred for healing piercings, and many professionals avoid it in quality work.
Common features:
- Post is the same thickness as the threading, so the threaded portion is slightly rougher.
- Inexpensive and widespread in cheaper jewelry.
- Can irritate tissue during changes.
Internal threading
The threads are inside the post and inside the end’s stem. The outside of the post is smooth, so it passes through the piercing without scraping. The end has a small threaded stem that screws into the hollow post.
Common features:
- Smooth outer surface, gentler on tissue.
- The stem on the end is thinner than the post, so it fits inside.
- Often used in quality titanium and steel jewelry.
- Needs well-cut threads, since poor ones can cross-thread or strip.
Many professionals prefer internal threading for anything that passes through a healing or sensitive piercing. A key practical point is that ends are tightened by hand, and the rule of thumb is “righty tighty, lefty loosey,” which helps when changing a piece.
Threadless jewelry
Threadless jewelry, also called press-fit or push-pin, has no threads. The decorative end has a small pin attached. The post is hollow, and the pin is bent very slightly so that, when pushed into the post, it grips by friction and spring tension. To remove the end, you pull it straight out, sometimes with a gentle twist.
Strengths
- A smooth, thread-free design with a neat look.
- Ends that are secure when fitted well, with a lower profile at the connection.
- Easy to change ends, with no unscrewing.
- Sometimes preferred by piercers for initial jewelry because there is no turning involved.
Cautions
- The grip depends on a correctly set pin. A pin that is too straight may fall out, and one that is bent too much is hard to insert.
- Reusable pins can lose tension over time, so a loose end is a sign to replace the end.
- Quality varies between makers. Poorly made threadless pieces may loosen.
- Learning to insert and remove them takes a little practice. Some people find them fiddly.
The loss of an end is not just inconvenient; a loose end can be swallowed in oral piercings or lost entirely. Checking security is part of care for any piece.
Comparing the systems
| Feature | External thread | Internal thread | Threadless |
|---|---|---|---|
| Post surface | Threads on the outside | Smooth | Smooth |
| Tissue friendliness | Often lower | Higher | Higher |
| Changing ends | Unscrew | Unscrew | Pull and push |
| Loosening risk | Can unscrew | Can unscrew | Can lose tension |
| Typical cost | Lower | Medium | Medium to higher |
This table gives general tendencies, not rules. Quality of manufacture matters at least as much as the system.
Practical tips
- Check ends regularly. Threaded ends can loosen with movement, and threadless ones can lose grip. Check with clean hands.
- Do not overtighten. Firm is enough; forcing a thread can damage it.
- Match parts. Threads are specific to a gauge and thread type. Mixing brands can cause poor fits, and the article on jewelry gauge and fit explains why sizes need to agree.
- Inspect threads. If the stem or hole looks rough, stripped or burred, replace the piece.
- Keep it clean. Debris in threads and hollow posts can be hard to clean. Follow the aftercare instructions from your piercer rather than home remedies.
- Do not swap early. In a fresh piercing, removing the post to change the ends can injure tissue; the article on changing jewelry too early covers this. A professional can change ends without moving the post.
- Be careful with an unlisted material. If one component is a different metal, the material of the post still matters more than the decoration.
Handling dangers
Do not try to tighten or loosen the end of a piercing in a way that twists the post inside the tissue. Hold the post still and turn only the end. If your end will not budge, ask a professional rather than using pliers on your own. Pulling hard can tear tissue.
If you see swelling, discharge or persistent soreness after changing an end, or if you suspect a reaction to the metal, seek advice from a professional or doctor. Nothing here is a substitute for individual guidance.
Which is better?
There is no single winner. Internal threading and threadless both avoid scraping the channel, and many studios work with one or both. External threading is widely sold but is less often chosen for quality work. What matters most is the build quality, the material and a snug, smooth fit. If you are choosing, ask the piercer which system they use and why, and follow their guidance for your piercing.