Hendrickson says there are four specifications required to obtain the correct U-bolt.
Rolled Threads vs. Cut Threads
Hendrickson says it uses only rolled threaded U-bolts. A rolled thread provides better thread structure than a cut thread. Rolled threads also have a better surface quality, allowing applied torque to go directly to clamping force.
Use the Right Tool
Ensure that a calibrated torque tool is used and that a torque value is specified, the company says. Be aware that certain automatic tightening tools can result in the variations in torque value and preload of bolts. Hendrickson says avoid this by using a calibrated torque tool for the final tightening torque inspection.
Other tips from Hendrickson
