Martyr Zinc Anode Marine Screw 0.5″ x 3.75″ Zinc Plated Magnesium

Description

Product Overview

The Martyr zinc anode marine screw is engineered for robust cathodic protection in saltwater environments. Made from high‑grade zinc alloy and finished with a zinc‑plated coating, the screw resists corrosion while delivering consistent performance. Its dimensions—0.5″ fastener length, 3.75″ outside diameter, and a 2″ compatible groove—ensure a secure fit for a variety of marine structures. The part weighs 1.58 pounds and complies with ISO 9001 quality standards, guaranteeing precision manufacturing and reliability.

Usage

Designed for ocean‑going vessels, offshore platforms, and marine equipment, this screw protects iron, steel, aluminum, magnesium, and other metals from galvanic corrosion. Install it in any partially threaded groove of 2 inches, making it suitable for hulls, propeller shafts, and submerged fittings. Its unthreaded design simplifies installation while the hex head provides a secure grip for torque application. Ideal for shipbuilders, maintenance crews, and marine engineers seeking cost‑effective protection.

Why Choose Us

Martyr anodes are pressure die‑cast and undergo strict quality checks under an ISO 9001 Quality Management System. The alloy is free from iron impurities, ensuring maximum protective performance. Our 90‑day warranty reflects confidence in durability and corrosion resistance. By choosing Martyr, you receive a product backed by proven engineering, consistent supply, and responsive customer support.

Key Features

• High‑grade zinc alloy resists saltwater corrosion for long‑term protection
• Zinc‑plated finish adds an extra barrier against harsh marine conditions
• Fits 2″ groove with 0.5″ fastener, suitable for a wide range of vessel components
• ISO 9001 certified manufacturing ensures consistent quality and fit
• 90‑day warranty and dedicated support for peace of mind

FAQ

What materials can this anode protect?

The screw is suitable for protecting iron, steel, aluminum, magnesium, and other common marine metals from galvanic corrosion.

Is the screw compatible with all marine groove sizes?

It is designed for a 2‑inch compatible groove and works best in partially threaded applications of that size.

How does the zinc‑plated finish improve performance?

The zinc plating adds an additional corrosion‑resistant layer, extending the service life of the anode in aggressive saltwater environments.

What is the warranty period?

Martyr provides a 90‑day warranty covering manufacturing defects and material issues.

Can I install this screw without special tools?

Installation requires a standard hex driver or wrench; no specialized equipment is needed.