A shackle, also known as a gyve, is a U-shaped piece of metal secured with a clevis pin or bolt across the opening, or a hinged metal loop secured with a quick-release locking pin mechanism. The term also applies to handcuffs and other similarly conceived restraint devices that function in a similar manner.

China LG Supply offers shackles to fit marine projects. They feature D-shaped and Bow shaped, screw pin, square head pin, bolt type pin and sunken head pin styles. We have Trawling shackles, which are made of stainless steel 304/316 for corrosion resistance and durability. We also have US-type high-tensile shackles for you to choose from.

Trawling Gear
Boat Fittings

Types of Trawling Shackle

Difference between Galvanized Shackle and Stainless Shackle

Both Galvanized Shackle and Stainless Shackle are good choices as both offer excellent corrosion and rust protection.


In general, Galvanised Shackle is ideal for industrial applications where humidity is not a major issue. It is also less expensive than stainless steel, but still has the strength and durability expected of a shackle.


Stainless steel shackles are made from grade 304 stainless steel or Marine grade 316 stainless steel, which has greater corrosion resistance and is ideal for marine applications. 316 stainless steel is more advanced.

How to Use Trawling Shackles?

How to Use Trawling Shackles?

Please check the shackle before use.

1. The markings on the Shackle are clearly legible.

2. Ensure that the shackle body and pin are of the same size and that the matching accessories used are of the appropriate size or WLL.

3. Ensure that the shackle body and pin are not excessively worn, corroded, deformed or damaged; do not weld, heat, bend, etc. the shackle as this will affect its working load limit.

4. Ensure that the shackle has all its components, such as cotter pins for bolt-type pins, if not

When you are using it, please

1. make sure that the pin is screwed into the eye of the release buckle correctly and secured with a spanner or other tool

2. make sure the shackle supports the load correctly, i.e. the load is along the center line of the shackle body and not just on one side.

Composition of the Trawling Shackle


Trawling shackles generally consist of a shackle body and a pin, so different types of trawling shackles differ in these two parts.


The Bow shackle, also known as the anchor shackle, is, as the name implies, a bow-shaped one with an almost circular shape. This type of shackle can support lateral loading or be used for multi-legged lifting.

The D shackle or Dee shackle, also known as the chain shackle, is similar in shape to the D. It is suitable for straight line tension and should not be loaded sideways, the center line of the load should always be the same as the center line of the chain shackle.


And the pins are generally square-headed pins, screw pins, bolt-type pins, round-headed pins, etc.


Square head pins are a common type of release pin used in the fishing and trawling industries. Square head pins are less likely to come loose when they touch an object, and less likely to hang up on ropes.

The screw pin is scalloped at one end, with or without a shoulder, and threaded at the other end to screw onto the unhooking body. Not recommended for long-term or permanent situations, these pins can be easily tightened and removed and are suitable for scenarios where frequent sling changes are required.

The bolt-type pin is a more secure pin than the screw-type pin and consists of a single-threaded hexagonal bolt, a nut and a cotter pin. With the fastening nut and cotter pin, there is no need to tighten the pin before lifting and moving the load, so the bolt-type pin is the best choice for long-term or semi-permanent scenarios.

Round pins are not threaded and are secured at the end with a cotter pin. Not recommended for use in overhead lifting applications, multi-legged spreaders or where lateral loads may occur.

We are a professional manufacturer and supplier of Trawling / Rigging / Stainless / Yacht Equipments in China

Request a Free Quote
or drag files here.
China LG RIGGING's Updates
Copyright © QINGDAO LG RIGGING CO.,LTD. All Rights Reserved.