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Skin Fitting Domed
Skin Fitting Domed
Tru Design

Skin Fitting Domed

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Designed and made in New Zealand, TruDesign® Skin Fittings are the superior composite through-hull solution. The Skin Fitting body and nut are precision moulded from glass-reinforced Nylon composite. High strength, high-modulus glass fibres provide dramatic strength, stiffness, toughness and dimensional stability. These are some of the unique properties that give significant advantages and weight-savings over traditional metallic fittings. TruDesign® Skin Fittings eliminate all corrosion and bonding problems associated with electrolysis. Approved and certified to ISO International Standards by the International Marine Certification Institute (IMCI, Belgium) & Bureau Veritas, TruDesign® Skin Fittings are quality-made giving peace of mind performing in the harsh marine environment.


  • Manufactured from a glass-reinforced Nylon composite - High strength, tough and light weight
  • Compatible with all hull types - Can be used on aluminium, steel, wood, composite & GRP hulls
  • Immune to corrosion & electrolysis - Long life with no decreased performance due to corrosion
  • Chemical resistant - Unaffected by diesel, petrol, chemicals, and antifouling paints
  • U.V resistant - Will not degrade or discolour from the sun’s ultraviolet rays
  • Paintable - Paintable with all types of antifoul including Coppercoat™
  • Fits TruDesign® Ball Valves and other parallel BSP or NPS threads - Universal compatibility to TruDesign® brand fittings and other marine hardware
  • Large operating range - Suitable for all marine conditions from -20°C to +100°C
  • Supplied in individual plastic bags with a header card and info sheet - Lists IMCI Certification, size, and installation instructions as per IMCI regulations
  • Meets ABYC H-27 Standard when installed in combination with TruDesign® Ball Valves & Load Bearing Collars

    Standards and Approvals
    TruDesign® Skin Fittings are certified by the International Marine Certification Institute (IMCI) and Bureau Veritas to meet; ISO 9093-2 Small craft - Seacocks and through-hull fittings - Part 2: Non-metallic Note: 1/2” size Skin Fittings not approved to ISO 9093-2

    In meeting the ISO 9093-2 standard, Skin Fitting assemblies are subjected to a 1500 N (155 kg / 341.7 lb) force for 10 cycles from the most inward part of the assembly, without any damage occurring.

    TruDesign® Skin Fittings, when assembled together with TruDesign® Ball Valves and TruDesign® Load Bearing Collars, meet ABYC’s H-27 standard. This allows the entire assembly to withstand a 500 lb (226.8 kg) load applied to the inboard end of the assembly (i.e. from the Ball Valve’s Tail fitting) for a minimum of 30 seconds without any damage occurring.

  • TruDesign® Skin Fittings are suitable for installation in all types of hull construction; steel, aluminium, composite, fibreglass - cored and solid, wooden sandwich
  • TruDesign® Skin Fittings are also able to be used on caulked solid wood hulls. Ensure fittings are always installed in the centre of individual planks

    Minimum Internal
    Maximum Hull
    138620BLK 12 35
    138620 12 35
    138621BLK 17 35
    138621 17 35
    138622BLK 23 35
    138622 23 35
    138623BLK 30 48
    138623 30 48
    138624BLK 36 48
    138624 36 48
    138625BLK 49 54
    138625 49 54

After ordering online, you will receive an automated email confirmation containing your order details. Your order will then be confirmed within a few minutes of placing your order.

It is our policy to ensure we deliver to our customers in a timely manner. In order to achieve this we use a range of freight companies depending on the size and weight of your order. In some instances we may use a number of carriers to get your products to you. For example, chain may come by road, some electronic equipment by air.

Most orders are shipped within 2 - 5 Days

Shipping rates

Orders delivered to Australian Post Codes under $499 attract an $18.00 shipping charge.

Orders of $499 or more ship free.*

For Remote areas and bulky items. If the cost to send is vastly different to our standard delivery costs, someone from our team will contact you prior to dispatch to arrange further payment or to issue a refund if you are not happy with the additional charges.

International orders will be charged at $0.00 initially and our staff will be in contact with a shipping quote. If the quote is not accepted the customer reserves the right to cancel their order and be refunded in full.

Should you have any queries or concerns about shipping, please don't hesitate to get in touch by clicking the support button on bottom right of the page.

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