Description
1-3/4" Aluminum Shaft Anode | Performance Metals | Boat Supply Store
Safeguard your vessel's propeller shaft and underwater running gear from destructive galvanic corrosion with the Performance Metals 1-3/4" Streamlined Shaft Anode. Engineered from proprietary Navalloy® aluminum, this anode meets rigorous MIL-DTL-24779 military specifications, ensuring robust protection across all marine environments including saltwater, brackish water, and freshwater. Its patented "red spot" wear indicator visually signals depletion, eliminating guesswork and simplifying maintenance for offshore fishermen operating off the Texas coast.
Key Features
- Protects propeller shafts from galvanic corrosion
- Meets military specification MIL-DTL-24779
- Works in all water types: salt, brackish, and fresh
- Indicates wear with patented "red spot" technology
- Constructed from high-performance Navalloy® aluminum
- Features a streamlined 1-3/4" design
- Includes stainless steel hardware for secure mounting
- Simplifies installation with a two-piece, captured-bolt design
Specifications
| Product Specifications | |
|---|---|
| Shaft Size | 1-3/4" |
| Material | Performance Metals Navalloy® Aluminum |
| Compliance | MIL-DTL-24779 |
| Water Type Suitability | Salt, Brackish, Fresh |
| Wear Indicator | Patented "red spot" |
| Hardware Included | Stainless Steel |
| Design | Streamlined, Two-piece with captured bolts and pressed-in nuts |
Who This Is For
Boat owners and marine mechanics seeking reliable, long-term protection for propeller shafts and associated underwater metal components against galvanic corrosion. Ideal for those demanding military-grade specifications and simplified maintenance monitoring.
How It Compares
| Feature | 1-3/4" Aluminum Shaft Anode | Performance Metals | Competitor |
|---|---|---|
| Material | Navalloy® Aluminum | Aluminum, Aluminum |
| Shaft Size | 1-3/4" | 1-3/4", 1-3/4" |
| Water Type Suitability | Salt, Brackish, Fresh | All (Salt, Brackish, Fresh), All |
| Military Specification | MIL-DTL-24779 | Not Specified, Not Specified |
| Wear Indicator | Patented "red spot" | None Specified, None Specified |
| Hardware Included | Stainless Steel | Not Specified, Not Specified |
Common Concerns Answered
Are military-spec anodes hard to find?
While specific military-spec anodes can sometimes be challenging to source, this Performance Metals model, compliant with MIL-DTL-24779, offers readily available, high-quality protection that meets stringent standards.
Why would an anode not last as long as expected?
Anode longevity is primarily influenced by the corrosivity of the water and proper selection/installation. This anode is designed for extended life across all water types, but incorrect sizing or environmental factors can affect its lifespan.
Is the price significantly higher than generic options?
While the initial cost may be higher than non-specification anodes, the military-grade Navalloy® material and the patented "red spot" wear indicator provide superior, long-term corrosion protection and simplified maintenance, justifying the premium investment for your vessel's integrity.
Frequently Asked Questions
What is the purpose of a shaft anode?
A shaft anode, also known as a propeller shaft anode or shaft zinc, is a sacrificial component designed to corrode preferentially over the metal of your propeller shaft and associated underwater components, thereby preventing galvanic corrosion and protecting expensive parts from damage.
What type of water is this aluminum anode suitable for?
This Performance Metals aluminum anode is specifically formulated and manufactured to be suitable for use in all water types: salt water, brackish water, and fresh water. Aluminum anodes are typically preferred for freshwater and brackish environments, but Navalloy® is engineered for broad application.
How do I know when to replace this shaft anode?
The patented "red spot" wear indicator on this anode visually alerts you to its depletion. When the red indicator spot becomes visible, it signifies that the anode has sacrificed itself and needs to be replaced to maintain proper protection.
What hardware is included with this anode?
This Performance Metals shaft anode includes all necessary stainless steel hardware required for its installation, ensuring a corrosion-resistant and secure connection to the propeller shaft.
What are the dimensions of the Performance Metals 1-3/4" Streamlined Shaft Anode?
The anode is designed for a 1-3/4" diameter propeller shaft. Specific outer dimensions are proprietary to the streamlined design and should accommodate standard shaft mounting configurations.
