J Perkins 3/16in Brass Insert Coupling 5511874

The J Perkins 3/16in Insert Coupling, part number 5511874, is a brass insert coupling intended for suggested use in model boat drive systems. It provides a connection between a motor and propeller shaft through a flexible universal joint coupling or rubber drive.

This marine insert coupling has a ribbed, splined shaft section that presses into the coupling body. The profiled surface is designed to help prevent drive slip when torque is applied, supporting power transfer through the drivetrain. Its solid brass construction offers corrosion resistance for use in environments exposed to fresh or salt water.

Features

• Ribbed, splined insert shaft for pressing into flexible universal joint couplings or rubber drives
• Solid brass construction for corrosion resistance in wet environments
• Designed to help reduce drivetrain slop between motor output and propeller shaft

The 3/16in insert format is suited to compatible model boat drivetrain components using the corresponding coupling and shaft arrangement. The coupling creates a high-torque link while allowing the surrounding universal joint or rubber drive to connect the motor output to the propeller shaft. Check the dimensions and arrangement of the other drivetrain components before fitting.