







Airow Marine AISI 316 Stainless Steel Thru-Hull Hose Fitting (3/8" - 2")
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Engineered for Maximum Maritime Durability
Upgrade your vessel's plumbing with the Airow Marine Thru-Hull Hose Fitting, meticulously forged from premium AISI 316 Stainless Steel. Unlike standard 304 steel, our 316 alloy provides superior defense against pitting and crevice corrosion in high-salinity saltwater environments.
- Lost Wax Precision: Each fitting is manufactured using the lost wax casting process, ensuring structural integrity and a uniform wall thickness.
- Mirror Polished Finish: The high-reflectivity surface not only elevates your vessel's aesthetic but repels marine grime and simplifies cleaning.
- Universal Application: Available in 7 precise sizes from 3/8" to 2", these fittings are designed for seamless integration with standard marine hose types.
- Heavy-Duty Security: Features precision-cut threads and a robust hexagonal locknut for a vibration-resistant, watertight seal.

Frequently Asked Questions
- Is 316 stainless steel significantly better than 304 for boat hulls?
- Yes. 316 stainless steel contains molybdenum, which specifically resists pitting and crevice corrosion caused by chloride (saltwater). In marine environments, 304 steel will often develop surface rust and structural weakness far sooner than our 316 grade fittings.
- Does this fitting include the mounting nut and washer?
- Yes, each Airow Marine thru-hull fitting comes complete with a precision-threaded 316 stainless steel hexagonal locknut to ensure a secure, vibration-resistant mount to the hull.
- What sealant is recommended for the installation of this thru-hull?
- For permanent above-waterline installations, we recommend a high-strength polyurethane sealant like 3M 5200. For fittings that may require eventual removal, a marine-grade silicone or 4200-class adhesive provides an excellent watertight seal against fiberglass or metal hulls.
Engineering Specs
REV: 2025.Q4 // TECH-STANDARD
Material_Grade
AISI 316 Stainless Steel
Surface_Finish
Mirror Polish (Lost Wax Process)
UV_Resistance
Electropolished High-Reflectivity (UV Inert)
Corrosion_Rating
AISI 316 Grade Saltwater Resistance
Compatibility
Yachts, Bass Boats, Pontoons, Center Consoles
Hull_Integration
Fiberglass, Aluminum, Wood, Carbon Fiber
Standard_Ref
Universal Marine Fit
ESTABLISHED 2017
AirowMarine
Professional Marine Hardware for a Safer Voyage.












