Internally Threaded Titanium Jewelry, Titanium by Khrysos
The Titanium by Khrysos internally threaded jewelry collection is built on two non-negotiables: ASTM F-136 implant-grade titanium and smooth-post construction. Every piece in this collection is nickel-free, biocompatible, and anodizable. Whether you are upgrading from externally threaded jewelry, setting up a fresh piercing, or building a curated titanium look from scratch, this is the standard that professional piercers use.
What Is Internally Threaded Jewelry and Why Does It Matter?
Most people encounter the term at a piercing studio or after a reaction to older jewelry. Before browsing the collection, understanding what makes internally threaded jewelry different is what makes the choice easy.
How the Threading System Works
The distinction between internally and externally threaded jewelry comes down to one thing: where the screw threads sit. In externally threaded jewelry, the threads are cut directly into the post shaft. That threaded shaft is what passes through your piercing during insertion and removal. The threads are essentially small ridges on metal being dragged through piercing tissue. With fresh or healing piercings, this creates micro-tears in the tissue channel, gives bacteria a textured surface to colonize on, and makes clean autoclave sterilization difficult because steam cannot reach every groove in the threads.
Internally threaded jewelry reverses this entirely. The post shaft is smooth and hollow. The threads are on the removable end piece, which screws into the interior of the post. When you insert or remove the jewelry, only a smooth, mirror-polished surface contacts your piercing tissue. There is nothing to catch, nothing to scrape, and no exposed grooves for bacteria to settle in. The post itself stays smooth from tip to base.
Why Some Professional Piercers Recommend Internally Threaded Jewelry
The Association of Professional Piercers (APP) recommends internally threaded or threadless jewelry for all piercings, fresh or healed. This recommendation exists because the difference in tissue impact is not subtle. Smooth post insertion means less irritation, faster healing, and a lower risk of bacterial introduction during jewelry changes. Reputable studios stock exclusively internally threaded or threadless hardware. If a studio carries externally threaded jewelry as their primary option, that signals something about their overall standards. The Titanium by Khrysos collection is built to the same specification professional piercers require.
Why ASTM F-136 Titanium Is the Right Material for Internally Threaded Jewelry
A smooth post is only as safe as the material it is made from. Threading design and material standard work together, which is why Titanium by Khrysos pairs internally threaded construction exclusively with ASTM F-136 titanium.
ASTM F-136 vs. Surgical Grade vs. Implant Grade, Clearing Up the Confusion
Three terms come up constantly in body jewelry, and they are not interchangeable. "Surgical grade" is a marketing term with no standardized definition in the piercing industry. It appears on cheap steel and high-quality titanium alike, which makes it meaningless as a quality signal. "Implant grade" is broader and more meaningful but still encompasses different alloys. ASTM F-136 is the specific designation that matters: Ti6Al4V ELI, titanium alloyed with 6% aluminum and 4% vanadium at Extra Low Interstitial grade. This is the material standard the APP requires and what professional-grade internally threaded jewelry is made from. It is completely nickel-free and carries the highest biocompatibility profile available in piercing jewelry.
Titanium vs. Steel for Internally Threaded Jewelry
Both materials can be internally threaded and both can be implant grade, but titanium has specific advantages that steel cannot match. Titanium is roughly half the weight of steel at the same gauge and size, which matters particularly in nipple, navel, and industrial piercings where the jewelry is load-bearing. Titanium is also unconditionally nickel-free, even implant-grade steel alloys may contain trace nickel that can cause reactions in sensitive individuals. And titanium is the only material in this collection that can be anodized, which allows for a full spectrum of colors without any coatings or dyes. For people with metal sensitivities or for anyone who wants color options beyond silver and gold tones, titanium is the definitive choice.
The Titanium by Khrysos Internally Threaded Collection
Titanium by Khrysos is the titanium line developed in-house at Pierced Addiction, engineered specifically for professional-grade piercing jewelry rather than adapted from fashion accessories. The collection covers every major piercing type with consistent ASTM F-136 material standards across the range.
Labrets and Flat Back Studs
The titanium labrets form the core of this collection. Flat back studs with a smooth post and interchangeable screw-fit ends, available in 14G through 20G across multiple shaft lengths. The flat disc back sits flush against interior tissue without pressure points, making them the standard choice for tragus, helix, conch, flat, lobe, lip, labret, and nostril placements. The interchangeable end system means a single post can carry different decorative ends as your style evolves, without removing the post from the piercing.
Curved Barbells
Internally threaded curved barbells are engineered for placements where the jewelry needs to follow the natural curve of the anatomy: navel, eyebrow, daith, and rook. This design consideration is particularly important in curved placements where insertion angle means the post tip is more likely to contact tissue during jewelry changes. Smooth post construction removes that risk. Available in 14G through 18G with multiple length options to accommodate different anatomies.
Straight Barbells
Internally threaded straight barbells cover nipple, tongue, and industrial placements. Nipple and tongue piercings are among the highest-movement piercings on the body, making the quality of the threading mechanism especially important over time. With this system, the ends screw into a hollow interior, the wear pattern falls on the end piece, not on the shaft that contacts tissue. Available from 14G to 16G in lengths suitable for both initial and healed jewelry.
Circular Barbells and Industrial Barbells
Circular barbells, the horseshoe shape, are the standard for septum, daith, and orbital placements, with the open ends accommodating screw-fit ball or end options. Industrial barbells are the longest piece in the collection, spanning the two holes of an industrial piercing. Both are available in ASTM F-136 titanium with the same material standard as the rest of the Khrysos line.
Choosing the Right Internally Threaded Titanium Jewelry for Your Piercing
Selecting the right piece comes down to three variables: jewelry type, gauge, and length. Getting all three right from the start avoids the most common purchasing mistake, ordering something that does not fit the placement correctly.
Gauge Guide by Placement
Gauge refers to the thickness of the post shaft. Standard gauges by piercing type are:
- Ear cartilage (helix, tragus, conch, flat): 16G or 18G
- Lobe: 18G or 20G
- Nostril: 18G or 20G
- Lip and labret: 16G or 14G
- Navel: 14G
- Nipple: 14G or 12G
- Industrial: 14G
- Septum and daith: 16G or 14G
If you are unsure of your current gauge, check the packaging from your original jewelry or ask your piercer directly. They can confirm gauge and length in under a minute and save you an exchange.
Length and Anatomy
Length is the wearable shaft measurement from the disc back to the tip of the post. There is no universal correct length because it depends entirely on individual anatomy. Fresh piercings need more length to accommodate swelling during healing. Healed piercings should be downsized to a snug fit to minimize movement and snagging. A post that is too long will shift, which can extend healing time or cause irritation even in a fully healed piercing. Your piercer is the most accurate source for your specific length, if you have existing jewelry, the sizing is already confirmed.
Why Shop Internally Threaded Titanium Jewelry at Pierced Addiction
Most jewelry retailers that carry internally threaded titanium pieces source them alongside fashion accessories and general body jewelry with no particular expertise in piercing-specific applications. The threading tolerances, disc sizing, and post geometry that matter in professional piercing hardware are not a priority when the product line spans earrings, bracelets, and necklaces.
Pierced Addiction developed Titanium by Khrysos specifically because that gap existed in the retail market. Every piece in the Khrysos internally threaded collection is manufactured to the tolerances that professional piercing hardware requires: consistent post diameter for reliable end engagement, smooth hollow interior with precisely cut internal threads, and disc geometry designed to distribute pressure evenly across tissue. The material standard is straightforward: ASTM F-136, nickel-free, aligned with APP requirements across the entire line. There is no lower-tier version using a different material to hit a price point.
On the practical side, orders over $25 ship free via USPS economy. Domestic orders placed before 1pm are processed the same day. If your preference is the threadless system at the same ASTM F-136 material standard, the titanium threadless labrets collection is built on the same foundation. The full Titanium by Khrysos ecosystem, rings, ends, chains, and posts, is available in one place so you can build a complete matching titanium setup without sourcing from multiple vendors.
Frequently Asked Questions About Internally Threaded Jewelry
Here are the questions customers ask most often before purchasing from the Titanium by Khrysos collection.
What is internally threaded jewelry?
Jewelry with a smooth hollow post where the screw threads sit on the removable end piece, not on the shaft. The post passes through the piercing without any exposed threading.
Is internally threaded better than externally threaded?
For fresh and healing piercings, yes. The smooth post eliminates micro-tears and bacterial risk from exposed threads. The APP recommends internally threaded or threadless jewelry for all piercings.
What is ASTM F-136 titanium?
The specific implant-grade titanium standard used by professional piercers: Ti6Al4V ELI, nickel-free, and fully biocompatible. It is more precise than the vague "surgical grade" label found on lower-quality jewelry.
Can I use internally threaded titanium jewelry in a fresh piercing?
Yes. ASTM F-136 titanium with a smooth internally threaded post is one of the recommended materials for initial jewelry by the APP. The combination of biocompatible material and smooth insertion minimizes healing disruption.
Can titanium jewelry be anodized to different colors?
Yes. Anodization creates color by thickening the titanium oxide layer rather than applying a coating. The color is part of the metal surface, so it will not chip or peel, and it does not affect biocompatibility.
How is internally threaded different from threadless?
Internally threaded uses a screw mechanism: the end piece screws into the hollow post. Threadless uses a bent-pin tension system with no screwing required. Both keep the post smooth. Both are APP-approved options for safe piercing hardware.
The Titanium by Khrysos internally threaded collection gives you ASTM F-136 material, smooth post construction, anodization options, and a full range of jewelry types in one place. For fresh piercings, sensitive skin, or upgrading from lower-quality hardware, the standard is clear. Browse the collection above and find the right piece for your placement.