Through-Hull Skin Fitting + Lock Nut Kit (BSP) — Parametric (3D Print)

🔖 Art. ML3D_0016

🔖 Art. ML3D_0016 Parametric BSP through-hull KIT by MarineLab3D — generates TWO parts: the through-hull skin fitting (flange + externally threaded hollow tube) AND the matching flanged hex lock nut. You download a ZIP with two separate STL files (through-hull.stl + lock-nut.stl). 🔧 Male BSP thread: 1/4" to 2 1/2" 📏 Tube length 20–80 mm · Inner Ø up to (outer − 6 mm) · Flange Ø from (outer + 10 mm) ⬇ Tapered flange (flat on the hull side) · 2 opposite key-slots to hold it while tightening · matching lock nut with same flange 🖨️ Print recommendations: PETG or ASA, 0.15–0.2 mm layers, 4 perimeters. For fittings kept submerged for long periods, print in PPS (alternatively PA612-CF). Seal threads with O-ring / PTFE. Use “Customize dimensions” to set the sizes, preview in 3D, then receive your ZIP (2 STL) after purchase. 🖨️ No 3D printer? After your purchase, on your download page you can request an instant print quote: your model is sent pre-loaded to our partner Craftcloud, which compares ~180 print services worldwide and ships the finished part to your door — no printer or setup required. 📄 License — Personal use only. Print this model for your own personal use. Reselling or redistributing the file, or selling printed copies, is not allowed. © MarineLab3D — full terms: https://marinelab3d.com/pages/license

Related designs: Deck Filler with Hose Barb + Winch Cap (Water/Diesel/Waste) — Parametric (3D Print), Tank Cap with Winch Socket (BSP, replacement) — Parametric (3D Print), BSP Blanking Plug / Cap — Parametric (3D Print)

Disclaimer. MarineLab3D sells digital 3D files, not finished parts. The strength, fit and safety of the printed part depend on your printer, material, settings and assembly, which are outside our control. Verify all dimensions before printing, use the recommended material and inspect every print. Provided “as is” without warranty; to the maximum extent permitted by law MarineLab3D is not liable for any damage, loss or injury arising from their use. Not certified marine equipment. Full Disclaimer & Terms of Use.

⚠ Load-bearing / pressure part. Suggested loads or pressures are indicative estimates for a well-printed part in the recommended material, not guarantees. Run your own load/pressure test before relying on it. Do not use for life-safety or critical applications (lifelines, harness/tether attachment, standing rigging, steering, gas or fuel systems) unless independently tested and certified by a qualified professional.