https://www.etrailer.com/Boat-Trailer-Parts/CE-Smith/CE15283GA.html
Today we’re going to take a look at the CE Smith U-bolt. This is our galvanized, 1/2″ diameter u-bolt, part number CE15283GA. Our u-bolt is 3 1/16 wide x 3 13/16 long. The bolt itself is galvanized, which after it’s stamped and molded it’s dipped giving it 3 to 5mm fixed coating around the steel. With the galvanized protection on our bolt it’s suitable for use even in salt water. It’s a square design, so it’s designed for the square frame to secure your bracket to your trailer.
Note: Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.