Tie Down Strap Tag Information: Break Strength and Working Load Limit

Webbing tie down straps like ratchet straps and cam buckle straps should be marked with a tag indicating the break strength and working load limit. Blackline tie down straps from USCargoControl.com

 What does the break strength mean on tie downs?

According to the Web Sling and Tie Down Association (WSTDA), breaking strength is the load in pounds or kilograms at which point any load bearing part of the synthetic web tie down fails.

 What does working load limit mean?

The working load limit, also marked at WLL, is the maximum allowable load assigned to each synthetic web tie down by the manufacturer which is not to exceed one-third of the complete assembly breaking strength. This means a strap with a break strength of 16,200 lbs. would have a WLL of 5,400 lbs.