Size, work load and trademark are permanently marked on all shackles
Loads are based on a safety factor of 6 to 1.
When tested, all shackles are pulled at a uniform rate of speed in a direct tension.
Any deviation such as angular lifts, shock loads, modification of the basic forging, etc. will result in drastically reduced maximum loads.
Shackles meet Federal Specifications RRC-271d Type IV.

All types of shackles are available in a self-colored or hot-dipped galvanized finish. When ordering please specify the size, finish and type of shackle. Other rust preventative coatings are available on a special basis.