







Marine Thru-Hull Outlet Fitting - 316 Stainless Steel Mirror Polish (1/2"-1.25")
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Superior Marine Plumbing Engineering
Upgrade your vessel's drainage system with the AirowMarine 316 Stainless Steel Thru-Hull Outlet Fitting. Engineered for extreme maritime conditions, this fitting is cast from premium AISI 316 stainless steel, offering unparalleled resistance to pitting and crevice corrosion in high-salinity environments.
Technical Precision
- Jewelry-Grade Finish: The electropolished mirror surface not only provides a high-end aesthetic but actively resists marine growth and grime buildup.
- Watertight Integrity: Machined with exacting tolerances and supplied with a heavy-duty locking nut to ensure a fail-safe, leak-proof seal for your bilge and plumbing lines.
- Versatile Application: Suitable for above or below waterline installation on fiberglass, aluminum, or composite hulls.
Whether you are performing a critical repair or a custom boat build, AirowMarine hardware provides the structural reliability required for the open sea.
Frequently Asked Questions
- Will this fitting rust in high-salinity saltwater environments?
- No. This fitting is manufactured from AISI 316 Stainless Steel, which contains molybdenum. This specific alloy is designed to prevent pitting and corrosion even in the harshest saltwater conditions, unlike lower-grade 304 stainless.
- Is the installation hardware included with the thru-hull?
- Yes, each fitting comes with a heavy-duty, precision-machined locking nut to ensure a secure, watertight seal against the hull during installation.
- Does the mirror finish serve a purpose beyond looks?
- Absolutely. The 'Jewelry-Grade' electropolished finish creates a molecularly smooth surface that significantly reduces the ability of marine growth, algae, and grime to adhere to the fitting, making maintenance much easier.
Engineering Specs
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ESTABLISHED 2017
AirowMarine
Professional Marine Hardware for a Safer Voyage.



