Couplemate 13mm Safety Chain Connection Kit – 3.5T ATM

The Couplemate 13mm Safety Chain Connection Kit is designed for secure and compliant trailer safety chain installations up to 3.5T ATM (Aggregate Trailer Mass).

This high-quality kit includes heavy-duty components to ensure a safe and legal connection point between your trailer's safety chain and the tow vehicle. Ideal for caravans, boat trailers, and box trailers, it helps meet ADR requirements and withstands tough towing conditions across Australia.

Durable and corrosion-resistant, this kit provides peace of mind during every tow.

13mm x 3.5t Safety Chain and Holder Kit

Safety Chain, Hammerlock and Holder Kit include:

10mm option: one set to suit trailers up to 2.5t.

13mm option: two sets to suit trailers over 2.5t.

Galvanised chains and shackles are illegal on all trailers over 3.5t. Trailers over 2.5t require two safety chains.

Testing Specifications

Longitudinal Tension: 37kN (Pass) – 9.81 x ATM (kg)
Vertical Tension: 18.9kN (Pass) – 0.5 x 9.81 x ATM (kg)

It is essential to remember.

No chain welding over 2.5t
No chain welding below the chassis rails. Weld safety chains horizontally.

Trailers up to 2.5 tonnes ATM must have at least one safety chain complying with AS 4177.4 – 1994 (Trailer and light trailer towing components – Safety chains up to 3.5 tonnes capacity) or as amended from time to time.

This standard allows for steel safety chains by the following

up to 1.0 tonne, a chain size of 6.3 mm
up to 1.6 tonnes, a chain size of 8 mm
from 1.6t to 2.5t, with a chain size of 10 mm

Trailers over 2.5 and up to 3.5 tonnes ATM must have two safety chains complying with AS 4177.4 – 1994 or as amended foccasionally This standard allows for steel safety chains by the following:

• up to 3.5 tonnes, a chain size of 13 mm.

Safety Chain Kits for Caravan and Trailers

more than 3.5 tonnes ATM,
all medium and heavy category pig trailers with rigid drawbars,
any other trailers without breakaway brakes
and all fixed and rigid pig trailers with a GTM higher than 2.5 tonnes and fitted with automatic pin-type couplings,

An excellent article on Dee Shackles and Safety Chain