U-bolts for trailer suspension accessories

U-shaped bolts, that is, riding bolts, the English name is U-bolt, is a non-standard part, named after the U-shaped shape, with threads on both ends that can be combined with nuts, mainly used for fixing tubular objects such as water pipes or sheets such as The leaf spring of a car is called a horse-riding bolt because it fixes the object in the same way that a person rides on a horse.