Airow Marine AISI 316 Stainless Steel Thru-Hull Hose Fitting (3/8" - 2")

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Sale price€4,95
Size: 3/8"
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Tax included (excl. Monaco, Norway, N. Ireland). Check Cart/Checkout for rates. Shipping options (Standard 8-15d / Economy 25-45d) vary by address and weight. Delivery to remote areas is subject to extended transit times. Save ~7% on shipping for orders >100kg (220lbs).

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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.

Airow Marine technical specification infographic showing material grade, available diameters, and surface finish details.

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.

Design engineers and marine consultants reviewing technical blueprints and a stainless steel porthole window assembly in an office overlooking a container port.

Our Roots

Hong Kong Based, 8 Years of Expertise

The story of AirowMarine began eight years ago. Headquartered in Hong Kong, we have been dedicated to the global operation and brand building of marine accessories. These eight years of experience have taught us that on the unpredictable sea, every single component carries the trust and safety of the boat owner.

B2B marine hardware production: A massive mirror-polished 316 stainless steel boat anchor being hoisted for quality verification in AirowMarine’s industrial workshop in mainland China.

Supply Chain

Invested Factories in Mainland China

To ensure our products withstand extreme environments, we are more than just a bridge for trade. AirowMarine has invested in its own manufacturing facilities in Mainland China. Leveraging the region's mature and efficient industrial supply chain, we are deeply involved in the entire process—from raw material selection and precision machining to final assembly. We avoid exaggerated claims; instead, through professional logistics and rigorous quality control, we ensure every product delivered to you meets high nautical-grade standards.

Technical quality control inspection showing a Mitutoyo digital caliper measuring a polished marine fitting at 12.45mm precision.

Reliability

Strict QC & Global Logistics

As a provider of marine accessories, our business is intimately connected to the water. We believe that protecting the ocean is not just a slogan; it must be reflected in every detail of our business. Currently, AirowMarine is continuously optimizing our packaging solutions: we maximize the reduction of single-use plastics in our packaging and shipping processes, using recyclable paper-based cushioning materials whenever possible. Our products are built to power your voyage, while our packaging is designed to protect the purity of the blue sea.

Close-up of a 316 stainless steel circular louvered deck vent in eco-friendly honeycomb paper packaging with AirowMarine shipping label.

Our Mission

Protecting the Blue, Plastic-Free

We are aware that there is always room for improvement, but we have never stopped in our pursuit of excellence and environmental responsibility. AirowMarine is committed to providing you with durable, reliable, and eco-conscious marine accessories.

Expert Guidance

Technical help in 24 hours

International Delivery

Secure & Tracked Shipping

Custom Solutions

Tailored parts for your boat

Factory Direct

Invested supply, best value

Proven Quality

Tested for nautical safety