Specification Overview:
Zinc alloy hull anodes are specified under US Mil Spec 18001K. The composition includes maximum limits for various elements: Iron (Fe) 0.005%, Cadmium (Cd) 0.025-0.07%, Copper (Cu) 0.005%, Aluminium (Al) 0.10-0.50%, Lead (Pb) 0.006%, with others totaling 0.10% max. The remainder is Zinc (Zn). The potential is -1.05 V Ag/AgCl, and the capacity is 780 Amp.hr/kg.

Anode Specifications:
The document lists various anode models with specific dimensions and weights. Each anode is identified by a unique number and includes details such as:

• Overall and body dimensions (length, width, height in mm).
• Net and gross weight (in kg).
• Hole centers for stud use, specifying compatibility with M10, M12, M16, or M18 studs.

Usage and Installation:
Anodes are designed for specific applications with detailed installation instructions, including hole centers for stud compatibility. This ensures proper fitting and performance in marine environments.