Quick Answer

Learn what a bow shackle is, where it is used, how load angle affects selection, and what buyers should check before choosing shackle size, pin type, and WLL.

A bow shackle is a rigging connector with a rounded bow-shaped body and a removable pin. It is used to connect lifting slings, chains, hooks, wire ropes, and other rigging components.

The wider bow shape gives more space for multiple sling legs or wider attachments, but it does not mean the shackle can be used without checking working load limit, load direction, and pin condition.

Relevant product category: shackles.

Bow shackle vs dee shackle

A bow shackle has a rounded body. A dee shackle has a narrower D-shaped body.

In general:

  • bow shackles are often used when more than one sling leg connects to the shackle;
  • dee shackles are often used for straight-line loading;
  • both types must be selected by WLL, pin type, material, and application.

The shape helps match the connection, but the rated working load limit is still the key specification.

Common uses

Bow shackles are often used in:

  • lifting sling assemblies;
  • chain sling connections;
  • marine and towing applications;
  • construction rigging;
  • machinery handling;
  • temporary lifting setups;
  • recovery and pulling arrangements.

They are useful where the connection point needs more internal space than a narrow shackle provides.

Why load angle matters

A shackle is strongest when it is loaded in the direction intended by the design. Side loading or angled loading can reduce the safe working capacity.

Before using a bow shackle, confirm:

  • whether the load is straight or angled;
  • whether the sling legs may spread;
  • whether the pin may be side-loaded;
  • whether the body may rotate under load;
  • whether the manufacturer's reduction guidance is required for the angle.

Do not assume a shackle is safe just because it physically fits.

Pin types

Common pin types include screw pin and bolt-type pin.

A screw pin shackle is convenient for temporary connection and removal. A bolt-type shackle is often preferred where vibration, repeated movement, or longer-term connection may occur.

For repeated or critical lifting, the buyer should confirm the pin type in the specification instead of treating all bow shackles as interchangeable.

Inspection points

Before use, inspect:

  • body deformation;
  • pin thread damage;
  • visible cracks;
  • severe wear;
  • corrosion;
  • missing markings;
  • mismatch between body and pin;
  • signs of heat damage or unauthorized repair.

If the WLL marking is unclear or the pin does not match the shackle body, the shackle should not be used for lifting.

Buyer checklist

When buying bow shackles, prepare:

  • required WLL;
  • shackle size;
  • pin type;
  • material and finish;
  • standard or certificate requirement;
  • application: lifting, towing, marine, construction, or general rigging;
  • expected sling arrangement;
  • quantity and destination.

For complete sling systems, buyers may also need slings and chain components.