Boom Pin is the heavy-duty steel rod that holds the boom onto the machine’s frame and lets it pivot smoothly. We slide it through matching holes in the boom and frame, then secure it so the boom moves up and down without wobbling. Made from strong steel, it handles big forces, dirt and grease. When it wears or bends, we pull it out, grease the new pin and slide it back. Simple swap, minimal downtime. Imagine a giant door hinge for your excavator.