J Perkins Marine 1/4in Insert Coupling 5511876

J Perkins 1/4in Insert Coupling, part number 5511876, is a brass insert coupling for model boat drive systems. This component provides a link between motor output and the propeller shaft, using an insert design intended for flexible universal joint couplings or rubber drives. Its 1/4in size identifies the coupling format stated for this product.

The shaft section has a ribbed, splined profile that presses into the body of a flexible universal joint or rubber drive. This creates a secure mechanical connection and helps prevent drive slip when torque is transferred through the drivetrain. The design also helps reduce drivetrain slop between the motor and propeller shaft, supporting smooth power transfer through the boat's drive system.

Made from solid brass, the coupling provides corrosion resistance for exposure to fresh and salt water. This makes the material suited to the marine environment described for the component, while the press-fit insert arrangement keeps the coupling focused on the connection between the drive components. It is intended for applications where the motor and propeller shaft need to be joined through a flexible coupling or rubber drive body.

Features

• Ribbed, splined insert shaft designed to press into flexible universal joint couplings or rubber drives
• Solid brass construction with corrosion resistance for fresh and salt water exposure
• Helps prevent drive slip under torque and reduce drivetrain slop

The J Perkins 5511876 combines the insert shaft profile and brass construction in one marine drive component. When used with the stated coupling types, it provides a high-torque connection between the motor and propeller shaft while helping maintain efficient power transfer through the model boat drivetrain.