Flat back earring studs, also called flat back labret studs or internally threaded studs, feature a straight titanium post with a flat disc back and a screwable or push-fit top. The flat disc back sits flush against the skin, distributing pressure more evenly than standard ball-back earrings and reducing the likelihood of irritation and snagging.
Flat back studs are made from ASTM F136 implant-grade titanium, the material most widely recommended by professional piercers. They are suitable for a wide variety of ear piercings including lobe, helix, conch, tragus, flat, rook, and daith, as well as facial piercings such as nostril, medusa, monroe, and labret locations.
Common gauges for flat back earring studs are 16G (1.2mm) and 18G (1.0mm), with post lengths ranging from 6mm to 10mm. Internally threaded studs have the thread on the top (end piece) rather than the post, preventing any threaded surface from passing through the piercing channel — a design that minimises the risk of tissue damage during insertion.
Frequently Asked Questions
What is the difference between internally threaded and externally threaded studs?
Internally threaded studs have the screw thread on the top piece (end), and the post is smooth. Externally threaded studs have the thread on the post itself. Internally threaded is preferred by professional piercers because no threaded surface passes through the piercing channel during insertion, reducing the risk of irritating or damaging tissue.
Are flat back studs better than regular earrings?
Many piercers consider flat back studs superior to standard butterfly-back earrings for both initial piercings and long-term wear. The flat back prevents pressure points, the internally threaded post avoids tissue irritation, and the secure screw mechanism reduces the likelihood of the stud falling out.
What gauge are flat back earring studs?
Flat back earring studs are most commonly available at 16G (1.2mm) and 18G (1.0mm). Lobe piercings can be pierced at various gauges, so it is important to match the stud gauge to your piercing.
Can flat back studs be used during healing?
Yes. ASTM F136 implant-grade titanium flat back labret studs are suitable for healing piercings. Many piercers use them as initial jewellery for lobe, helix, nostril, and other piercings because the flat back and smooth post minimise irritation during the healing period.
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