TruDesign Domed Skin Fitting – ¾″, 1″ & 1 ½″ BSP Marine Composite Thru-Hull Fittings (Black)
Certified composite domed skin fittings engineered for corrosion-resistant, durable below-waterline installations on Irish boats and coastal vessels
- Sizes available:
- ¾″ BSP male thread – approx. 46 g
- 1″ BSP male thread – approx. 68 g
- 1 ½″ BSP male thread – approx. 120 g
- Material: Glass-reinforced nylon composite body & nut — lightweight, UV-stable, paintable
- Certified to ISO 9093‑2 and IMCI, Bureau Veritas type-approved; meets ABYC H‑27 500 lb static load (¾″ & 1″ sizes with proper installation)
- Suitable for GRP, steel, aluminium, wood hulls; resin cores — requires backing plate for hulls <20 mm thickness
- Temperature range: −40 °C to +110 °C; resistant to diesel, petrol, antifouling chemicals
- Corrosion and electrolysis immune when used with composite technologies — no bonding issues
- Paintable finish compatible with antifouling paints; does not green or degrade over time
- Weight advantage over bronze fittings — especially lightweight for size (e.g., 1 ½″ approx. 120 g)
- Sold as standalone skin fitting (nut & washer included); pairs with TruDesign ball valve & ABYC collar for secure below-water use
The TruDesign Domed Skin Fitting in ¾″, 1″, and 1 ½″ BSP sizes offers a marine-rated composite solution designed for reliable, corrosion-resistant thru-hull installations on boats sailing in Ireland’s challenging coastal and offshore waters. Its glass-reinforced nylon construction ensures durability against electrolysis and harsh antifouling chemicals common in Irish marine environments. Lightweight yet robust, these fittings meet international standards for safety and performance, making them ideal deck equipment for Irish mariners seeking safe and long-lasting below-waterline solutions.


