Threaded jewelry and body piercing

What threading do you prefer for your bars?

Threaded jewelry and body piercing

Updated Wednesday May 07, 2008

Brian Skellie
Member AAMI
Member ASTM
Committee F04 on Medical and Surgical Materials and Devices
Committee F04.12 on Metallurgical Materials

We use threadless, patented snap together for 18 and 16g

For larger pieces we use screw threads based on the industry standard:

1.2mm for 14 and 12g
00-80 for 10 and 8g
2-56 for 6g
4-40 for 4g
5-40 for 2g
6-32 for 0g
8-32 for 00g

We occasionally use custom threading on specialty items. NO External Threads!

	How does it stay together? The removable end has a small insertion pin (see picture at left), which is slightly curved on all straight-shaft threadless jewelry, or unbent on all curved-shaft threadless jewelry. When inserted into the shaft, the curvature between the insertion pin and the inside of the shaft creates spring tension, holds the end securely in place. This is similar to a captive bead ring, where the natural spring tension of the metal holds the bead in place. *How do I adjust the fit?* The tension of the pin keeps the end securely attached to the shaft. The greater the bend in the pin, the greater the tension, and therefore a tighter fit. All our assembled threadless barbells and labrets are already adjusted; however should want to increase or decrease the security of the fit to your tastes, adjustment is easy:
1. Insert the pin about one-third to halfway into the shaft.
2. Bend the pin slightly. It is important that you make slight adjustments in the bend...over-bending could make the fit too tight.
3. Push the loose end back into the barbell and test the fit...if it is too tight, take some of the bend out of the insertion pin and try again.

For curved barbells, adjusting the bend in at the end of the pin works well for most adjustments. Remember: SLIGHT ADJUSTMENTS!

If you have any more questions about threadless jewelry or other general questions, give us feedback