Originally Posted by
scottar
Guess you use a rated hammerlock but as my trailer doesn't use short link, two tonne shackles fit it easily. With a ATM of 2800 kg, by the towing guide, it uses a chain to a different Australian standard than the one mentioned for 3500 + using short link T grade. I can only assume that Mayfairs being a reputable trailer manufacturer were familiar with the requirements at date of manufacture with my trailer and welded on chains that met legal requirements for the ATM. Like I said - they can deal with it if I've been sold something not fit for purpose. I haven't measured it but it is at least 10mm chain possibly 12 mm which should be around a 1200kg WLL (5000 Kg Breaking Strain) as a rough figure which should be enough - even when you don't allow for the second one.