Sea-Dog Galvanized Open-Base Cleats: Flat vs Socket Head
Sea-Dog's hot-dip-galvanized cast-iron rope cleats offer an open-base attachment for small boats and recreational docks. The five models compared here vary by length and head shape, so choosing the right one involves checking both the mounting footprint and the intended use.
Flat-head and socket-head differences
Flat-head, open-base
040104 and 040105 have the flat-head profile. The 4- and 5-inch lengths are separate models; match the deck or dock fastening arrangement when replacing one.
Socket-head, open-base
040106, 040110 and 040112 use the socket-head shape at 6, 10 and 12 inches. A larger cleat is not necessarily suitable for a heavier vessel.
Sea-Dog open-base cleat length comparison
| Sea-Dog MPN | Overall length | Head style | Construction |
|---|---|---|---|
| 040104 | 4 in | Flat head | Hot-dip galvanized cast iron |
| 040105 | 5 in | Flat head | Hot-dip galvanized cast iron |
| 040106 | 6 in | Socket head | Hot-dip galvanized cast iron |
| 040110 | 10 in | Socket head | Hot-dip galvanized cast iron |
| 040112 | 12 in | Socket head | Hot-dip galvanized cast iron |
Application limits: Sea-Dog describes this galvanized open-base series for small boats and recreational docks. It is not recommended for large vessels or commercial-duty use. Check the installation and backing structure before relying on a cleat for dock lines.
Before installing on a boat or dock
- Measure the available mounting area and compare the exact cleat length to the existing fitting or installation plan.
- Confirm the correct head profile: flat for 040104/040105, socket for 040106/040110/040112.
- Choose appropriate through-fasteners and structural backing to resist the mooring forces; the cleat alone does not determine connection capacity.
- Leave clearance for the expected line size and the way it wraps around the horns, and prevent sharp line contact with nearby fittings.
- Follow marine and dock installation recommendations. Do not select this recreational-grade series for commercial moorings or large vessels.
Matching Sea-Dog galvanized rope cleats
Compare the exact manufacturer number and choose the matching product listing.
More marine reference pages
For additional marine connection hardware, see Sea-Dog D and bow shackles.
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