Groco 76 mm thru-hull

GROCO Thru-Hull Fitting | Secure Marine Plumbing for Your Vessel

Ensure the absolute integrity and safety of your vessel´s plumbing system with the industry-leading GROCO Thru-Hull Fitting. As a critical component in the ´Thru-hulls´ category, this fitting is engineered for boaters who demand uncompromising quality and legendary reliability. Designed to provide a secure, watertight passage through the hull for plumbing lines, this GROCO fitting is an essential element for any below-the-waterline application, from raw water intakes to scupper drains. Install with the confidence that comes from using a product built for the harsh marine environment.

Unwavering Reliability and Performance

Choosing the right hardware for your boat is paramount, especially for components that live below the waterline. The primary benefit of the GROCO Thru-Hull is the long-term peace of mind it provides. Its robust design is engineered to withstand the constant pressures of the sea, vibrations from the engine, and the corrosive effects of saltwater. The heavy-duty flange provides a wide, stable base against the hull, distributing stress evenly and creating a superior foundation for a watertight seal. This ensures a secure, leak-proof connection that protects the structural integrity of your vessel for years to come.

Key Features and Design

This premium thru-hull fitting is thoughtfully designed for both performance and ease of installation. It features precision-machined threads that ensure a smooth, positive engagement with seacocks and other NPT-threaded fittings, preventing cross-threading and guaranteeing a tight connection. The substantial, full-sized nut provides ample surface for tools, allowing for proper tightening and a secure installation. It is a complete system designed to work seamlessly, providing a professional-grade solution for your boat´s plumbing needs.

Professional Installation Guidelines & Specifications

To achieve a safe and watertight installation, please adhere to the following critical considerations. This fitting is designed for customization to your specific vessel for a perfect, secure fit.

Should have threaded portion cut to proper length considering hull and butt block thickness.

Consider thread depth when using a seacock.

Sealant is recommended between hull and thruhull flange.

Has locknut with bonding screw.

Comes with nut.

Specifications:
- Pipeline:

Diam.

13mm.

When it comes to your boat’s safety, there is no room for compromise. Trust in GROCO, a brand synonymous with maritime excellence and robust engineering. By choosing this thru-hull fitting, you are investing in the safety, reliability, and longevity of your vessel. Perfect for new builds, refits, or essential upgrades, this fitting is the professional´s choice for a secure connection between your boat and the water