Rated Shackles & Hooks

ADR Rated Shackles & Connectors | Trailers & Caravan Safety

Australian trailers and caravans require a chained connection to the tow vehicle’s tow bar.

Couplemate™ is committed to manufacturing safe, secure, and ADR-compliant equipment.

You can filter our range of high-quality shackles, connectors, and holders by important component properties, such as material grade and maximum ATM compatibility.

What Shackles Do Trailers & Caravans Require?

Couplemate™ engineers and experts often get asked, “What shackles do I need for my caravan?”

All trailers in Australia, including caravans and campers, must be connected to the tow vehicle through a rated chain. The RVS sets this mandatory safety standard to protect drivers, pedestrians, and other road users.

The trailer/caravan ATM determines the number of chain connections and the grade required, which determines the number of shackles (or connectors) you need.

Shackle Requirements for Trailers under 2500kg ATM (2.5t)

All Australian trailers that do not exceed 2500kg ATM must have at least one safety chain connection compliant with AS4177.4 (Australian Standards).

This means that light trailers under 2.5t ATM need one rated chain, one connector for the trailer drawbar, and one for the tow bar. An example of a simple box trailer could be:

• 1 x 10mm Safety Chain (stamped every four links)
  1 x Hammerlock (10mm Pin)
  1 x D-Shackle (11mm Pin)

It’s important to note that the trailer drawbar (and vehicle tow bar) will need a holder for the connectors. For the trailer side, the Couplemate™ CM551-3 Safety Chain Holder is a popular choice for domestic and international manufacturers.

Shackle Requirements over 2500kg (2.5t) up to 3500kg ATM (3.5t)

All trailers, caravans, and campers with ATMs over 2500kg must have two safety chain connections that are AS4177.4 compliant. For example, if you have a 3.5t ATM caravan, you will have two rated chains, two connectors for the trailer drawbar, and then two connectors for the tow bar.

Requirements for Chain Connections in ATMs over 3500kg ATM (3.5t)
AS4177.4 requires all trailers, caravans, and campers over 3500kg ATM to have steel chain components rated G80 (Grade 80) or higher.

Couplemate™ is a manufacturer and supplier of high-quality G80 components that are thoroughly tested and compliant with Australian Standards and ADRs.