March 30, 2024
April 3, 2024
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  1. Function: The primary function of a prop nut is to securely attach a propeller to the propeller shaft, ensuring it remains firmly in place during operation. It helps to transmit torque from the shaft to the propeller, allowing the boat to propel forward or reverse through the water.
  2. Design: Prop nuts are typically hexagonal or octagonal in shape, allowing them to be tightened or loosened using a wrench or socket tool. They have internal threads that match the external threads of the propeller shaft, enabling them to be screwed onto the shaft and clamp the propeller securely in position.
  3. Installation: Prop nuts are installed by threading them onto the end of the propeller shaft and tightening them securely against the propeller hub. They may incorporate features such as locking mechanisms or cotter pin holes to prevent them from loosening during operation and to ensure the propeller remains securely attached.
  4. Materials: Prop nuts are commonly made of corrosion-resistant materials such as stainless steel, bronze, or brass to withstand the harsh marine environment and exposure to saltwater. This helps to prevent corrosion and ensure the longevity of the fastening system.
  5. Applications: Prop nuts are essential components in marine propulsion systems, used on various types of boats and watercraft powered by outboard motors, sterndrives, or inboard engines. They play a crucial role in ensuring the reliable and safe operation of the vessel by securely fastening the propeller to the shaft.