How to Measure a U-Bolt

Regardless of the bend type, all U-bolts are measured in the same manner as shown here. The U-bolt size is given as Diameter(A) x Distance(B) x Leg Length(C). Additionally the bend type must also be given to avoid problems in specifications of semi-round bend shapes.

Forged top U-bolts are best ordered by application and leg length since the type of forging is usually unique to the particular application and must be maintained to provide proper fit and clearance.

Three types of U-bolts

Three basic types of bends are used on U-bolts depending on the suspension design and the shape of the mating parts:

1) Round Bend
2) Semi-Round Bend
3) Square Bend

Additionally, each of these bend types may use forged material. This is used primarily where additional clearance is required between the U-bolts and, for example, the frame.