Internally Threaded Titanium Straight Barbells - Titanium by Khrysos
Khrysos ASTM F-136 titanium internally threaded barbells are built for the widest placement range in piercing: industrial, tongue, nipple, cartilage, eyebrow, bridge, and surface. Available in 14G and 16G with multiple lengths, smooth post construction, and compatible with the full Khrysos internally threaded ends system. Nickel-free, anodizable, and backed by a lifetime workmanship guarantee.
What Makes an Internally Threaded Barbell Different
Threading configuration determines how ends attach to an internally threaded barbell and whether any thread ridges contact piercing tissue during wear or jewelry changes. For placements with long healing timelines, this distinction has a direct impact on healing outcomes.
Internally Threaded vs. Externally Threaded Barbells
An internally threaded barbell has a hollow smooth shaft. Thread grooves sit inside the bar end, not on the shaft surface. The ball or decorative end carries a small screw pin that threads inward into the bar, keeping the post exterior completely smooth from end to end. No raised threads ever pass through the piercing channel.
An externally threaded barbell has threads machined directly onto the shaft. During insertion and removal, those thread ridges drag across piercing tissue. For placements with extended healing windows such as industrial (6 to 12 months), tongue (6 to 8 weeks of active swelling), and nipple (up to 18 months), this repeated friction compounds over dozens of jewelry changes.
The Association of Professional Piercers recommends internally threaded or threadless jewelry for all placements, and the internally threaded barbell is specifically recommended for straight-bar placements. Externally threaded designs are not APP-recommended for any fresh or healing piercing.
Internally Threaded vs. Threadless for Straight Barbells
Threadless straight barbells use a bent-pin push-fit system with no screwing required. Both internally threaded and threadless are smooth-shaft, APP-approved designs. For straight barbells specifically, internally threaded construction is more common because the longer shaft provides enough mechanical stability for a screw-in end to stay firmly seated during movement.
Threadless systems are optimized for shorter posts such as labrets and flat backs, where the push-fit geometry performs best. For any straight-bar placement, the internally threaded barbell remains the most widely used and piercer-recommended design. The Khrysos range includes both systems, and the internally threaded barbell is the right choice for anyone who wants a screw-locked, secure end across all barbell placements.
Placements for Internally Threaded Titanium Straight Barbells
The internally threaded straight barbell is the most multi-placement form factor in body jewelry. Understanding how the same internally threaded barbell design serves different placements helps narrow down the correct gauge and length before purchasing.
Industrial Piercing
The industrial is the defining placement for a long straight barbell. It passes through two cartilage points, typically helix to antihelix or flat to helix, requiring a barbell long enough to span both exit holes. Key facts for industrial buyers:
- Standard gauge: 14G across virtually all industrial piercings
- Standard lengths: 32mm, 35mm, and 38mm cover the majority of ear anatomies
- Healing timeline: 6 to 12 months of continuous tissue contact
Because an internally threaded barbell contacts cartilage at two points simultaneously, ASTM F-136 titanium reduces nickel exposure risk throughout the full healing period. Its lower weight compared to steel also reduces pull on the cartilage span during daily movement.
For anyone replacing steel industrial jewelry that has caused irritation, switching to a titanium internally threaded industrial barbell is the most effective single change a piercer can recommend.
Tongue Piercing
Tongue piercings are the second most common placement for straight barbells, with 14G being the industry standard thickness. Choosing the correct length for each stage of the healing process is critical for both comfort and oral safety:
Initial Healing (Weeks 1–6): A longer barbell—typically 16mm to 19mm—is required immediately after piercing. This extra length is essential to accommodate significant tongue swelling during the first several weeks.
Stabilization & Downsizing: Once the swelling subsides (usually 6 to 8 weeks in), switching to a shorter internally threaded barbell of 12mm to 16mm is the standard next step.
Wearing an oversized barbell after the healing phase is complete is a common mistake. It increases constant dental contact, which significantly elevates the risk of gum erosion and chipped teeth over time.
Titanium is highly preferred over surgical steel for this placement. Because Titanium is much lighter, it exerts far less pressure on your teeth and delicate gum tissue during everyday speech and eating.
Nipple Piercing
Nipple piercings use straight barbells at 14G for most placements, with 16G for smaller anatomy. Quick reference:
- Healing length: 14mm to 16mm to accommodate initial swelling
- Healed length: 12mm to 14mm for average anatomy
- Healing timeline: 6 to 18 months, requiring quality material throughout
The internally threaded barbell construction eliminates thread drag that can disrupt the long healing process at this placement.
Cartilage, Eyebrow, and Surface Placements
Shorter internally threaded titanium barbells at 16G or 14G serve cartilage bars, bridge, anti-eyebrow surface piercings, dimple piercings, and some conch placements. When upgrading any of these placements, pairing your barbell with a compatible internally threaded end lets you refresh the look without removing the post. Length for these is shorter, typically 8mm to 12mm, and is anatomy-dependent. The smooth ASTM F-136 titanium shaft minimizes friction against cartilage tissue and produces none of the irritation caused by external thread contact.
Sizing Guide, Gauge, Length, and Ball Size
To select the right internally threaded straight barbell for any piercing, you must consider three key variables: Gauge (thickness), Length, and Ball Size. Here are the standard references based on placement:
Industrial Piercings: These require the longest barbells in the straight category. Typically, a 14G is used with a healing length of 35–40mm. Once fully healed, you should downsize to 32–38mm, usually paired with 4–5mm balls.
Tongue Piercings: These generally use a 14G post. During the initial healing stage, a longer bar of 16–19mm is necessary to accommodate swelling. After healing, this is shortened to 12–16mm with 5mm balls to protect dental health.
Nipple Piercings: A 14G is standard (though 16G may be used for smaller anatomy). Healing lengths range from 14–16mm, which should be downsized to 12–14mm once healed, paired with 4–5mm balls.
Facial & Cartilage (Eyebrow, Bridge, Ear Cartilage): These placements typically use a thinner 16G post. Healing lengths are usually 10–14mm, dropping to 8–12mm after healing, with smaller 3–4mm balls.
How to Determine Industrial Barbell Length
Industrial internally threaded barbell length is the most placement-specific measurement in body piercing. The correct length is determined by the distance between the two exit holes of the piercing. During healing, piercers typically leave 1mm to 2mm of extra length on each side to allow for swelling and minor movement. If you do not know your industrial length, have your piercer measure it before ordering replacement jewelry.
Two common sizing mistakes to avoid: a barbell that is too short applies pressure between the two cartilage exit points, causing persistent irritation that does not resolve until the jewelry is replaced; a barbell that is too long creates excess movement that prevents the cartilage from stabilizing and extends the healing timeline.
Ball Size by Placement
Ball diameter affects both visual profile and functional pressure at the exit hole. For industrial and tongue piercings, 5mm balls are the standard. They are large enough to be visible and secure enough not to shift toward the piercing channel under normal movement. For nipple piercings, 4mm or 5mm balls are used depending on anatomy and preference. For cartilage and facial placements, 3mm to 4mm balls create a lower profile that snags less on clothing and hair and is proportionate to the smaller tissue area at the exit hole.
Why Choose Khrysos Internally Threaded Titanium Straight Barbells
Not all titanium internally threaded barbells are machined to the same standard. For placements like industrial and tongue where jewelry contacts sensitive tissue for months, the difference between precision-made and mass-produced is measurable. Here is what distinguishes this collection:
- ASTM F-136 titanium, Ti6Al4V ELI, zero nickel by composition. This is the specific standard the APP requires for initial and healing jewelry, not a general "implant grade" label. Nickel-free by composition means no coating can wear off and expose base metal.
- Precision thread tolerances machined to match Khrysos ends. Cross-threading, the most common failure point in mass-produced jewelry, is eliminated when barbell and end are produced to the same specification. Ends seat cleanly without over-tightening.
- Anodization, not coating. Khrysos anodization modifies the titanium surface oxide layer electrochemically. Available colors include high-polish silver, gold, rose gold, black, purple, teal, and blue. The color will not peel, chip, or affect biocompatibility.
- Lifetime workmanship guarantee. All ASTM F-136 titanium pieces in this collection are covered, with replacement on return of the defective piece. Free USPS economy shipping on orders over $25, same-day domestic processing before 1pm.
For the full range of internally threaded barbells and other internally threaded jewelry types, browse the titanium internally threaded collection which covers every form factor from labrets to circular barbells.
Frequently Asked Questions About Internally Threaded Straight Barbells
The questions below address the most common concerns about choosing and sizing an internally threaded straight barbell from the Khrysos collection.
What is an internally threaded barbell?
A straight barbell with a smooth hollow shaft. Thread grooves sit inside the bar end, not on the surface. The end screws in via a small pin, keeping the post tissue-safe throughout wear.
What length industrial barbell do I need?
Industrial length is anatomy-specific and must be measured by your piercer. The most common sizes are 32mm, 35mm, and 38mm. Never order shorter than your piercer's measurement.
What gauge is standard for an industrial piercing?
14G (1.6mm) is the standard gauge used by most piercers for initial industrial jewelry. Match this gauge unless you have intentionally stretched the placement.
When should I downsize my tongue barbell?
Once initial swelling resolves, typically 6 to 8 weeks after piercing. Have your piercer measure and confirm the correct shorter length for your anatomy.
Can I use Khrysos internally threaded ends with these barbells?
Yes. These barbells and ends are machined to matching thread tolerances. Any same-gauge Khrysos internally threaded end fits the threaded end without modification.
Are these safe for a fresh industrial or tongue piercing?
Yes. ASTM F-136 titanium with a smooth internally threaded shaft is APP-recommended for initial jewelry in all placements. Confirm gauge and length with your piercer before ordering.
Khrysos internally threaded titanium barbells cover the full placement range from short cartilage lengths through long industrial spans in 14G and 16G. Whether you are setting up a fresh industrial, downsizing a healed tongue, or upgrading to a better material standard, confirm your gauge and length from the sizing guide above and browse the collection.
See more: Straight Barbell Piercing 101: Types, Styles, and How to Choose