Shackles

Shackles are u-shaped connecting devices with removable pins. Extremely versatile pieces of rigging hardware, shackles connect objects to lifting slings, crane ropes, or even structural guy wires, among many other applications.

Since there are many designs and configurations of shackles available, it’s important to select the correct type and size of shackle for the job. The last thing anyone wants is a rigging failure.

Anchor shackles, also known as bow shackles, have a larger, rounder profile than the other common type, chain shackles. The larger bow shape of an anchor shackle allows for side loading and multi-leg sling configurations. 

Chain shackles are sometimes called D shackles because their shape resembles the letter “D”. These shackles are designed only for “in-line”, or one-directional, tension.

If the application is one where the shackle will frequently need to be opened and closed,  a screw pin shackle is quick and easy to operate. Bolt shackles are more permanent. They include a bolt-type pin, a tightening nut, and a cotter pin. Round pin shackle pins are not threaded, but secured with only cotter pins. They’re most popular in tie-down and towing applications, and should not be used for overhead lifting.

Contact Hercules SLR today to find out which type of shackle is right for you.