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Titanium Flat Back Studs Internal, Internally Threaded

G23 Titanium Plain Ball Internally Threaded Labret Studs

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Made from G23 Titanium, this piece offers exceptional strength while remaining lightweight for comfortable wear. Its sleek, polished ball design pr...

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£4.99
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G23 Titanium Marquise & Round CZ Dangle Labret Stud

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From £6.79
From £6.79
Current price £6.79

Add sparkle and elegance to your piercing with this G23 Titanium labret stud, featuring a marquise and round CZ dangle. The secure threaded d...

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From Original price
Original price
From £6.79
From £6.79
Current price £6.79

Browse Monster Piercing's collection of internally threaded labret studs in flat-back styles available in implant-grade titanium, surgical steel, and gold. Designed to the standards recommended by professional piercers, each piece features internal threading to protect your piercing during insertion and wear. Available in gauges 16G and 18G with multiple post lengths and decorative end options.

Collection Overview
Styling Guide
Shopping Guide
Materials
Care Instructions
FAQ
  • Internal threading standard: Every piece in this collection features threading on the inside of the post, with no raised exterior threads that could catch on tissue during insertion or removal.
  • Flat back design: The disc back sits flush against the skin at the rear of the piercing, keeping the jewellery stable and comfortable for extended wear, including overnight.
  • Interchangeable decorative ends: Tops screw in securely from the front, allowing you to refresh your look by swapping ends without disturbing the post.
  • Range of styles: Decorative ends include gem-set tops, opals, flat discs, spikes, and floral designs suited to minimal, statement, and alternative aesthetics alike.
  • Professional piercer alignment: Internal threading is the jewellery construction method recommended by professional piercers for both healing and healed piercings, reducing the risk of tissue irritation caused by external threading.
  • Available in multiple gauges and lengths: Collection includes 16G and 18G options with post lengths from 6mm to 10mm to accommodate different anatomy and placement requirements.
  • Ear curation: Flat-back labret studs work seamlessly in helix, tragus, and conch piercings alongside hoops and captive rings. Mix metals intentionally by pairing a titanium flat-back with a gold hoop in an adjacent placement for a curated, layered ear look.
  • Minimal everyday wear: A small gem or opal top in implant-grade titanium silver tone sits discreetly for work or formal settings while maintaining your piercing without drawing attention.
  • Statement lip combinations: For snake bites or angel bites, matching internally threaded labret studs in the same decorative end style creates a clean, intentional symmetry.
  • Alternative and subculture styling: Spike tops, dark gem sets in black or deep red, and matte black anodised titanium posts suit alternative, gothic, and punk-influenced aesthetics.
  • Colour layering with anodised titanium: Anodised titanium flat backs in rose gold, rainbow, or blue pair naturally with other warm or cool-toned jewellery in a stacked ear or mixed placement setup.
  • Gift styling: A set of internally threaded labret studs with interchangeable gem tops makes a considered gift for someone with a labret, Monroe, Medusa, or cartilage piercing practical and personal.
  • Confirm your gauge first: The two most common gauges for labret and flat-back ear piercings are 16G (1.2mm) and 18G (1.0mm). If you are unsure, check with your piercer or refer to your original piercing paperwork. Using the wrong gauge will mean the jewellery either does not fit or sits loosely in the channel.
  • Post length for healing piercings: If you are downsizing from initial jewellery, your piercer will measure your anatomy and recommend a specific post length, typically 6mm for most healed lip and ear placements. Do not select post length based on the initial jewellery alone, as initial pieces are intentionally longer to account for swelling.
  • Post length for healed piercings: Most healed lip and labret placements wear comfortably at 6mm. Ear cartilage placements vary; tragus and helix commonly use 6mm, while thicker cartilage may require 8mm. When in doubt, size up.
  • Material selection for sensitive skin: For nickel sensitivity or reactive skin, implant-grade titanium (ASTM F136) is the recommended choice; it is biocompatible, lightweight, and free from nickel. Surgical steel (ASTM F138) is suitable for healed piercings in most skin types.
  • Choosing a decorative end: If you are buying a labret stud to wear daily with minimal jewellery changes, a flat disc or small gem top is the most practical. If you want versatility, look for pieces where the post is sold separately from the top so you can swap ends over time.
  • Unsure where to start? Our piercing size guide covers gauge and post length recommendations by placement to help you shop with confidence.
Material Standard Key Properties Best Suited For
Implant-Grade Titanium ASTM F136 Lightweight, biocompatible, nickel-free, available in anodised colours (rose gold, black, rainbow, silver) Healing piercings, sensitive skin, nickel allergy, everyday wear
Surgical Steel ASTM F138 Denser and heavier than titanium, nickel-free to ASTM F138 standard, polished finish Healed piercings, those who prefer a weightier feel
Gold Not specified in provided data Warm metal tone, available in yellow and rose gold options Healed piercings, those preferring gold jewellery aesthetics

Note on material standards: ASTM F136 is the industry standard for implant-grade titanium used in body piercing jewellery. ASTM F138 is the equivalent standard for surgical-grade steel. Both standards specify strict limits on nickel content and biocompatibility; these are the material grades recommended by professional piercing organisations for use in body piercing jewellery.

  • Daily cleaning for healing piercings: Clean the piercing site, not just the jewellery, with a sterile saline solution (0.9% sodium chloride) twice daily. Do not rotate or twist the jewellery during cleaning. Always consult your piercer for healing aftercare specific to your placement.
  • Cleaning healed jewellery: Remove the decorative end by unscrewing it from the post. Clean both the post and the end separately using warm water and a mild, fragrance-free soap. Rinse thoroughly and dry completely before reinserting.
  • Avoid harsh chemicals: Do not expose your internally threaded labret jewellery to alcohol, hydrogen peroxide, bleach, or harsh cleaning products; these can damage surface finishes, particularly on anodised titanium, and may degrade the threading over time.
  • Storing your jewellery: Store pieces in a clean, dry container away from direct sunlight when not in use. Keep individual pieces separated to avoid scratching decorative ends or gem settings.
  • Reinserting the decorative end: When screwing the decorative top back onto the post, turn gently and do not overtighten. Overtightening can strip the internal threading. The top should feel secure but should not require significant force to seat.
  • When to seek piercer advice: If you experience prolonged redness, swelling, or irritation around a piercing while wearing this jewellery, consult your piercer before continuing to wear the piece. Do not attempt to change jewellery in an actively healing or irritated piercing without professional guidance.
  • What is internally threaded jewellery?

    Internally threaded jewellery has the threading cut into the inside of a hollow post. The decorative end has a small threaded pin that screws into the post from the front. This means there are no raised threads on the outside of the bar, nothing passes through the piercing channel except the smooth post surface. This is in contrast to externally threaded jewellery, where threading is cut onto the outside of the bar and those ridges pass through the piercing every time the piece is inserted or changed.

  • What is the difference between internally and externally threaded piercing jewellery?

    The difference between internally and externally threaded piercing jewellery comes down to where the threading is located. Internal threading sits inside the post, the bar surface that contacts your piercing is completely smooth. External threading is on the outside of the bar, meaning the ridged thread surface passes through the piercing channel during insertion and removal. For healed piercings, this distinction is largely about comfort and jewellery longevity. For healing or sensitive piercings, internal threading is the recommended option because smooth insertion reduces the risk of micro-abrasions and tissue irritation.

  • Is internally threaded jewellery better for sensitive skin?

    Internally threaded jewellery is widely recommended for sensitive skin because the smooth post surface does not create friction or micro-abrasions in the piercing channel. For those with nickel sensitivity, material choice is equally important, implant-grade titanium (ASTM F136) is biocompatible, nickel-free, and the most commonly recommended material for reactive or sensitive skin. Surgical steel to ASTM F138 standard is also nickel-free and suitable for most healed piercings. Always confirm material standards before purchasing if you have known metal sensitivities.

  • What gauge do I need for a labret stud?

    Most standard lip and labret piercings are pierced at 16G (1.2mm bar diameter). Some piercers use 18G (1.0mm) for finer placements or certain ear cartilage piercings. The most reliable way to confirm your gauge is to check with the piercer who performed your original piercing or refer to your aftercare documentation. Using a gauge that is too small for your piercing channel will result in the jewellery sitting loosely; using one that is too large will not fit at all.

  • What post length should I choose for a labret stud?

    Post length depends on your placement, anatomy, and whether your piercing is still healing or fully healed. As a general reference: most healed lip and labret placements are most comfortable at 6mm. Initial jewellery is typically 8mm or 10mm to account for post-piercing swelling. Ear cartilage placements such as helix and tragus commonly use 6mm, though thicker cartilage may require 8mm. If you are downsizing from initial jewellery, your piercer should measure your anatomy and confirm the correct length, this is not a step to skip during the healing phase, as a post that is too short can cause embedding.

  • Can I use a flat back labret stud in my helix or tragus piercing?

    Yes. Flat back labret studs are standard jewellery for helix, tragus, and conch ear piercings. The flat disc back sits flush against the ear cartilage without protruding, which makes them more comfortable than barbell-style jewellery for sleeping and day-to-day wear. Internally threaded flat back studs are the style most commonly recommended by professional piercers for cartilage piercings. The same gauge and post length considerations apply most ear cartilage piercings use 16G at 6mm once healed.

  • What does implant-grade titanium mean?

    Implant-grade titanium refers to titanium that meets ASTM F136 a material standard that specifies strict limits on elemental composition and biocompatibility. Titanium meeting this standard is free from nickel and other potentially reactive trace elements, making it suitable for prolonged contact with body tissue. It is lighter than surgical steel, resistant to corrosion, and can be anodised to produce colours without the use of dyes or coatings. Implant-grade titanium is the material most widely recommended by professional piercing organisations for use in body piercing jewellery.

  • How do I change the decorative end on an internally threaded labret stud?

    To change the decorative end on an internally threaded labret stud, hold the flat disc back firmly against the skin (or use clean fingers to stabilise the post from behind the piercing) and unscrew the decorative top by turning it anticlockwise. Once removed, the new decorative end which has a small threaded pin, screws clockwise into the post from the front. Turn gently until secure; do not overtighten as this can damage the internal threading. Always wash your hands thoroughly before handling jewellery near a piercing.

Collection Overview
  • Internal threading standard: Every piece in this collection features threading on the inside of the post, with no raised exterior threads that could catch on tissue during insertion or removal.
  • Flat back design: The disc back sits flush against the skin at the rear of the piercing, keeping the jewellery stable and comfortable for extended wear, including overnight.
  • Interchangeable decorative ends: Tops screw in securely from the front, allowing you to refresh your look by swapping ends without disturbing the post.
  • Range of styles: Decorative ends include gem-set tops, opals, flat discs, spikes, and floral designs suited to minimal, statement, and alternative aesthetics alike.
  • Professional piercer alignment: Internal threading is the jewellery construction method recommended by professional piercers for both healing and healed piercings, reducing the risk of tissue irritation caused by external threading.
  • Available in multiple gauges and lengths: Collection includes 16G and 18G options with post lengths from 6mm to 10mm to accommodate different anatomy and placement requirements.
Styling Guide
  • Ear curation: Flat-back labret studs work seamlessly in helix, tragus, and conch piercings alongside hoops and captive rings. Mix metals intentionally by pairing a titanium flat-back with a gold hoop in an adjacent placement for a curated, layered ear look.
  • Minimal everyday wear: A small gem or opal top in implant-grade titanium silver tone sits discreetly for work or formal settings while maintaining your piercing without drawing attention.
  • Statement lip combinations: For snake bites or angel bites, matching internally threaded labret studs in the same decorative end style creates a clean, intentional symmetry.
  • Alternative and subculture styling: Spike tops, dark gem sets in black or deep red, and matte black anodised titanium posts suit alternative, gothic, and punk-influenced aesthetics.
  • Colour layering with anodised titanium: Anodised titanium flat backs in rose gold, rainbow, or blue pair naturally with other warm or cool-toned jewellery in a stacked ear or mixed placement setup.
  • Gift styling: A set of internally threaded labret studs with interchangeable gem tops makes a considered gift for someone with a labret, Monroe, Medusa, or cartilage piercing practical and personal.
Shopping Guide
  • Confirm your gauge first: The two most common gauges for labret and flat-back ear piercings are 16G (1.2mm) and 18G (1.0mm). If you are unsure, check with your piercer or refer to your original piercing paperwork. Using the wrong gauge will mean the jewellery either does not fit or sits loosely in the channel.
  • Post length for healing piercings: If you are downsizing from initial jewellery, your piercer will measure your anatomy and recommend a specific post length, typically 6mm for most healed lip and ear placements. Do not select post length based on the initial jewellery alone, as initial pieces are intentionally longer to account for swelling.
  • Post length for healed piercings: Most healed lip and labret placements wear comfortably at 6mm. Ear cartilage placements vary; tragus and helix commonly use 6mm, while thicker cartilage may require 8mm. When in doubt, size up.
  • Material selection for sensitive skin: For nickel sensitivity or reactive skin, implant-grade titanium (ASTM F136) is the recommended choice; it is biocompatible, lightweight, and free from nickel. Surgical steel (ASTM F138) is suitable for healed piercings in most skin types.
  • Choosing a decorative end: If you are buying a labret stud to wear daily with minimal jewellery changes, a flat disc or small gem top is the most practical. If you want versatility, look for pieces where the post is sold separately from the top so you can swap ends over time.
  • Unsure where to start? Our piercing size guide covers gauge and post length recommendations by placement to help you shop with confidence.
Materials
Material Standard Key Properties Best Suited For
Implant-Grade Titanium ASTM F136 Lightweight, biocompatible, nickel-free, available in anodised colours (rose gold, black, rainbow, silver) Healing piercings, sensitive skin, nickel allergy, everyday wear
Surgical Steel ASTM F138 Denser and heavier than titanium, nickel-free to ASTM F138 standard, polished finish Healed piercings, those who prefer a weightier feel
Gold Not specified in provided data Warm metal tone, available in yellow and rose gold options Healed piercings, those preferring gold jewellery aesthetics

Note on material standards: ASTM F136 is the industry standard for implant-grade titanium used in body piercing jewellery. ASTM F138 is the equivalent standard for surgical-grade steel. Both standards specify strict limits on nickel content and biocompatibility; these are the material grades recommended by professional piercing organisations for use in body piercing jewellery.

Care Instructions
  • Daily cleaning for healing piercings: Clean the piercing site, not just the jewellery, with a sterile saline solution (0.9% sodium chloride) twice daily. Do not rotate or twist the jewellery during cleaning. Always consult your piercer for healing aftercare specific to your placement.
  • Cleaning healed jewellery: Remove the decorative end by unscrewing it from the post. Clean both the post and the end separately using warm water and a mild, fragrance-free soap. Rinse thoroughly and dry completely before reinserting.
  • Avoid harsh chemicals: Do not expose your internally threaded labret jewellery to alcohol, hydrogen peroxide, bleach, or harsh cleaning products; these can damage surface finishes, particularly on anodised titanium, and may degrade the threading over time.
  • Storing your jewellery: Store pieces in a clean, dry container away from direct sunlight when not in use. Keep individual pieces separated to avoid scratching decorative ends or gem settings.
  • Reinserting the decorative end: When screwing the decorative top back onto the post, turn gently and do not overtighten. Overtightening can strip the internal threading. The top should feel secure but should not require significant force to seat.
  • When to seek piercer advice: If you experience prolonged redness, swelling, or irritation around a piercing while wearing this jewellery, consult your piercer before continuing to wear the piece. Do not attempt to change jewellery in an actively healing or irritated piercing without professional guidance.
FAQ
  • What is internally threaded jewellery?

    Internally threaded jewellery has the threading cut into the inside of a hollow post. The decorative end has a small threaded pin that screws into the post from the front. This means there are no raised threads on the outside of the bar, nothing passes through the piercing channel except the smooth post surface. This is in contrast to externally threaded jewellery, where threading is cut onto the outside of the bar and those ridges pass through the piercing every time the piece is inserted or changed.

  • What is the difference between internally and externally threaded piercing jewellery?

    The difference between internally and externally threaded piercing jewellery comes down to where the threading is located. Internal threading sits inside the post, the bar surface that contacts your piercing is completely smooth. External threading is on the outside of the bar, meaning the ridged thread surface passes through the piercing channel during insertion and removal. For healed piercings, this distinction is largely about comfort and jewellery longevity. For healing or sensitive piercings, internal threading is the recommended option because smooth insertion reduces the risk of micro-abrasions and tissue irritation.

  • Is internally threaded jewellery better for sensitive skin?

    Internally threaded jewellery is widely recommended for sensitive skin because the smooth post surface does not create friction or micro-abrasions in the piercing channel. For those with nickel sensitivity, material choice is equally important, implant-grade titanium (ASTM F136) is biocompatible, nickel-free, and the most commonly recommended material for reactive or sensitive skin. Surgical steel to ASTM F138 standard is also nickel-free and suitable for most healed piercings. Always confirm material standards before purchasing if you have known metal sensitivities.

  • What gauge do I need for a labret stud?

    Most standard lip and labret piercings are pierced at 16G (1.2mm bar diameter). Some piercers use 18G (1.0mm) for finer placements or certain ear cartilage piercings. The most reliable way to confirm your gauge is to check with the piercer who performed your original piercing or refer to your aftercare documentation. Using a gauge that is too small for your piercing channel will result in the jewellery sitting loosely; using one that is too large will not fit at all.

  • What post length should I choose for a labret stud?

    Post length depends on your placement, anatomy, and whether your piercing is still healing or fully healed. As a general reference: most healed lip and labret placements are most comfortable at 6mm. Initial jewellery is typically 8mm or 10mm to account for post-piercing swelling. Ear cartilage placements such as helix and tragus commonly use 6mm, though thicker cartilage may require 8mm. If you are downsizing from initial jewellery, your piercer should measure your anatomy and confirm the correct length, this is not a step to skip during the healing phase, as a post that is too short can cause embedding.

  • Can I use a flat back labret stud in my helix or tragus piercing?

    Yes. Flat back labret studs are standard jewellery for helix, tragus, and conch ear piercings. The flat disc back sits flush against the ear cartilage without protruding, which makes them more comfortable than barbell-style jewellery for sleeping and day-to-day wear. Internally threaded flat back studs are the style most commonly recommended by professional piercers for cartilage piercings. The same gauge and post length considerations apply most ear cartilage piercings use 16G at 6mm once healed.

  • What does implant-grade titanium mean?

    Implant-grade titanium refers to titanium that meets ASTM F136 a material standard that specifies strict limits on elemental composition and biocompatibility. Titanium meeting this standard is free from nickel and other potentially reactive trace elements, making it suitable for prolonged contact with body tissue. It is lighter than surgical steel, resistant to corrosion, and can be anodised to produce colours without the use of dyes or coatings. Implant-grade titanium is the material most widely recommended by professional piercing organisations for use in body piercing jewellery.

  • How do I change the decorative end on an internally threaded labret stud?

    To change the decorative end on an internally threaded labret stud, hold the flat disc back firmly against the skin (or use clean fingers to stabilise the post from behind the piercing) and unscrew the decorative top by turning it anticlockwise. Once removed, the new decorative end which has a small threaded pin, screws clockwise into the post from the front. Turn gently until secure; do not overtighten as this can damage the internal threading. Always wash your hands thoroughly before handling jewellery near a piercing.

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