This is a Hot Dipped Galvanized U-bolt measuring 1/2" x 3 1/16" x 4 5/16", Used to hold on various brackets on boat and utility trailers. Includes galvanized nuts, lock washers, and flat washers. This size U-Bolt is most commonly used on Boat Trailers Bunk Support Brackets and to mount trailer cross members to the I-Beam Frame.
Finish: Hot Dipped Galvanized
Thread Size: ½-13
Inside Width: 3 1/16”
Inside Length: 4 5/16”
This U-Bolt size is the most commonly used boat trailer U-Bolt. The most common tubing that this U-Bolt would mount around would be 3" x 3" tubing. For example, using this U-Bolt with the Galvanized L-Type Vertical Bunk Bracket or Swivel Top Bunk Bracket would allow you to mount your bunk brackets to your trailers cross-member. In addition, this size U-Bolt would mount your Boat Trailer front V-Guide or Boat Trailer Roller Brackets to your trailers cross-members.