FULL DRUM TRAILER SAFETY CHAIN
Trailer safety chain is attached between the drawbar and the towbar for the purpose of retaining connection between the towing vehicle and the trailer in the event of coupler failure. " Standards Australia AS 4177.4"
The combination of trailer safety chain as per AS 4177.4 and Grade 'S' shackles rated 0.5T ,0.75T & 1T (WLL) as per AS 2741 are satisfactory to use as a connection point between trailer safety chain and the tow bar of a towing vehicle.
6mm Grade S Dee and Bow 0.5t (or above) shackles are suitable for trailers up to 1600kg aggregate trailer mass.
8mm Grade S Dee and Bow 0.75t (or above) shackles are suitable for trailers up to 2500kg aggregate trailer mass.
10mm Grade S Dee and Bow 1.0t (or above) shackles are suitable for trailers up to 3500kg aggregate trailer mass.