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Underwater Hardware

Marine Underwater Hardware

For a complete source of underwater hardware, look no further than Millers Island Propeller. We stock and distribute struts, rudders, couplings, packing boxes and other underwater hardware. In addition, Millers Island Propeller can custom build stainless steel struts and rudders to your specifications, and can also cast reproductions of discontinued struts or rudders.

Millers Island Propeller offers twice-weekly pick-up and delivery to marinas and marine businesses.


Dahmer Marine Hardware:



Rudder Arms

Rudder Ports


Prop Tip...

Minimize Cavitation

To minimize cavitation a propeller should have 15% clearance between blade tip and hull.

Latest News

Holiday Hours

Posted: December 03 2020

Millers Island Propeller will be closed Monday, December 14, 2020 and will reopen Monday, January 4, 2021. Merry Christmas and Happy New Year!

Ellis Propeller

Posted: March 21 2014

Now manufacturing hardware from Ellis Propeller


Posted: February 17 2014

Manufacturing propellers and marine hardware

Photo Gallery

Rudder ArmsRudder PortsStrutsChesapeake 4 propellersChesapeake 3 propellers