Connection logic at a glance
| Point | Threadless | Internally threaded |
|---|---|---|
| Connection | A pin on the decorative end fits into a hollow post and is retained by controlled tension. | A threaded stem on the removable end screws into a matching internal thread in the post. |
| Wearable post | Smooth; no screw thread on the section passing through the piercing. | Smooth; the thread is inside the post. |
| Critical dimensions | Post gauge, pin diameter, pin length, bend or retention design, end orientation. | Post gauge, internal thread pattern, stem length, thread fit, end orientation. |
| Compatibility risk | “Threadless” does not guarantee cross-brand fit or equal retention. | “Internally threaded” does not guarantee the same thread pattern or fit. |
Keep connection and jewelry structure separate
A connection system describes how components join. A jewelry structure describes the form of the finished piece. A flat-back labret may use a threadless or internally threaded end; a hinged clicker uses a hinge and closure rather than a removable end and post.
A straight post with a flat disc on one end and a removable decorative end on the other.
A straight post with an end at each side; one or both may be removable depending on construction.
A curved post with ends at both sides; dimensions and curve affect fit.
A ring with a hinged segment that closes into the ring body; hinge and closure quality matter.
A ring completed by a removable or hinged segment, depending on design.
A circular barbell with an open center and removable ends.
The compatibility check studios need
- Identify the system family: threadless, internally threaded, externally threaded, clicker, segment, or another proprietary structure.
- Match the post or ring gauge.
- Match the pin or thread design using the supplier’s stated specification—not appearance alone.
- Confirm wearable length or inner diameter.
- Confirm end diameter, setting height, orientation, and intended placement.
- Test fit using the business’s approved inspection process before mixing components.
Visual similarity is not proof of compatibility. A component that starts to engage but binds, wobbles, or sits with a gap should be treated as incompatible until the specification is confirmed.
Wholesale order fields
Material, gauge, wearable length, back style, and internal connection specification.
Connection type, pin or thread specification, end size, setting, stone, orientation, and material.
Gauge, inner diameter, closure type, seam alignment, decorative orientation, and material.
Single piece or pair, component packaging, labeling, and approved substitutions.
Sources, scope, and review
This page explains general product and sourcing concepts. It does not certify a NYONDIAMOND product, prescribe jewelry for an individual, or replace a qualified piercer or medical professional.