All of our Ubolts are Grade 8 with rolled threads. Cut threads are much weaker than Rolled. Cut threads actually remove material while rolled retain all the original material. They also come with True Tall Nuts and 3/16" Thick Hardened Washers which retain their shape while under the torque loads required.
U Bolt, 5/8

U Bolt, 5/8" X 3 3/8" X 10"

-158 available