An aluminum dock cleat is a marine-grade, cast aluminum hardware pieces used to secure boat mooring lines.  Featuring a corrosion-resistant matte or powder-coated finish, these durable, lightweight cleats often have an "S" or open-base design for an extra-wide footprint and quick, high-strength tie-offs. Commonly available in 6 to 12-inch sizes.

Key Features and Specifications:

• Material: Typically marine-grade cast aluminum (e.g., A356) or Almag 35 for superior strength and rust resistance, often featuring a matte or powder-coated finish.

• Design Options:

• "S" Cleat: Features a curved shape designed for easy rope wrapping and reduced line snags.

• Open Base: Provides a wider footprint for better load distribution.

• Flip-Up: Low-profile design that folds down when not in use.

• Sizes: Common sizes range from 6, 8, 10, to 12 inches, with larger options for heavier boats.

• Installation: Features two or more countersunk bolt holes, designed for easy mounting using 1/2-inch or 3/8-inch through-bolts or lag bolts.

• Load Rating: High-strength, with some models (e.g., 12-inch) designed for working loads up to 3,850 lbf. 

These cleats are ideal for use on wood, concrete, or aluminum boat docks