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How do you measure a U-Bolt?

Use the picture below for the following dimensional information (which is different on our U-Bolt pages).

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 Between Legs (B) x Leg Length (C). Additionally the bend type must also be specified; either round, semi-round or square. See the semi-round bend to avoid problems, which us a representation of our semi-round shape.


Calculating Rod Length before Bending

Note that the “C” measurement (length) is not exact depending on total rod length, consequently the “C” measurement may be slightly shorter or longer. We add “B” and “C x 2” measurements to get the total material length which is made in even lengths, 22, 28, 38 etc. You lose about 1/4″ during the bending process.

(Example: 4″ wide U-bolt with 5″ legs will be made out of a 14″ rod, resulting in an actual leg length of approximately 4 3/4″.)

Calculating Approximate Thread Length;

Approximate Thread Length is calculated by multiplying (“C” X 2) plus “B” which equals the overall length of rod material before bending. Rods come in even lengths, 22, 24, 26 etc.

Thread lengths are predetermined by our threaded rod manufacturer and are listed below and cannot be altered without a special order;

(Total rod length = Thread length on each leg)

  • Rod length of 8″ to 20″ = 2″to 3″ of threads
  • Rod length of 22″ to 30″ = Approx 4″ of threads
  • Rod length of 32″ to 48″ = Approx 6″ of threads

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