RIGGING – CONNECTING HARDWARE 2024

The rounded design of anchor shackles and bow shackles allow them to take loads from more directions without developing a significant side load stress.

There are three main rules that apply to using connecting hardware. They are (choose all that apply):

The pin, and not the bowl or loop of the shackle, always goes in the hook. No exceptions. However, you can add washers to keep the hook evenly spaced on the pin.

The bowl or loop of the shackle should always be used for slings or collectors, not the pin. The reason is:

A shackle is only designed to carry a load on the pin and within the 45° marks of the loop.

When point loading a shackle to a shackle, never:

Load hooks have an approved angle of use of 45° from the vertical and you must not exceed that.

Are you allowed to use a load hook in these configurations?

When inspecting, which of the following should be cause for removing a load hook from use? (Choose all that apply.)

Master links typically have a 120° angle of use or 60° from the vertical. All slings must be used inline or within the 120° included angle if using multiple slings. Master link capacities must be derated or reduced if pulled at an angle.

Master links should be inspected at the beginning of each shift and whenever their safety is of concern. The inspector should retire any master link that shows (choose all that apply):

The smaller loop of a D- or chain-shackle is designed to take high loads primarily in line, since side and racking loads may twist or bend a D or chain shackle.