Overview

The Attwood Marine 11029-6 is a zinc-plated steel coupler locking pin for boat trailers with 2-inch and 3-inch couplers. It passes through the coupler release handle to help keep the coupler from opening by mistake while the trailer is hooked up. With a size of 2-1/4 in. wide and 1-5/8 in. long, it adds a simple retainer at the hitch point without taking up much space.

This is a straightforward replacement or spare for trailer owners who launch often, tow regularly, or keep their rig outside between trips. The quick connect, quick disconnect layout makes it easy to remove when unhitching and easy to put back in place before towing again.

Key features

• Fits 2-inch and 3-inch trailer couplers
• Passes through the coupler release handle to help prevent accidental disengagement
• Solid steel construction with zinc plating for better resistance in saltwater and freshwater trailer use
• Quick connect, quick disconnect design for faster hitching and unhitching
• Pin dimensions: 2-1/4 in. wide x 1-5/8 in. long

Compatibility and fit

This pin is meant for couplers in the stated 2-inch and 3-inch size range and is used as a retaining pin through the latch handle. For a clean fit, compare the opening in your coupler release handle with the overall size of the pin before ordering, especially if you are replacing older trailer hardware.

On a boat trailer, this part sits at a point that sees vibration, spray, road grime, and frequent handling at the ramp. Having the correct size matters because the pin needs to slide in easily but still stay secure while the trailer is under tow.

Materials and corrosion resistance

The steel body has a zinc-plated finish that helps it hold up better around freshwater and saltwater use than plain unfinished steel. That matters on trailers that get backed into the water, rinsed off, and then spend time on the highway between launches.

A quick freshwater rinse after saltwater use and a check for surface wear during normal trailer inspections will help keep the pin moving freely through the coupler handle.

Use on boat trailers

This is a good match for boat owners who want a simple mechanical retainer at the coupler and do not want to overcomplicate routine hitch checks. It suits everyday trailering for fishing boats, runabouts, skiffs, and other trailerable boats that use couplers in the stated size range.