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one other thing to consider I have a Van 2200Kgs loaded I have 2 chains I have 2 Bow Shackles BOTH Bow Shackles are rated at 1.5t each combined max for BOTH shackles is 3t - well under my loaded weight - legal........... the individual shackle - either D or Bow does NOT have to be greater than the Mass being Towed - but combined (unless you only have 1 chain) a 3t rated Bow Shackle is rather large, and wont fit the chains anyway............
Thanks Kallen totally agree why risk your pride and joy with junk hardware or even Marine which would only be Stainless.
BUY properly rated shackles that suit the weight you are towing. or if you only have a bolt change it for a graded bolt, and zinc plated.
Chain on my camper has 50mm long links maybe bigger but crossed under the towbar with rated shackles its not going anywhere,
especially with the O'Brien coupling
Just read the GoSee link by Cuppa. sounds strange as when I went to get my trailer rego'ed
all they wanted was a current weigh bridge ticket,and receipts for all material used.
Not once was I asked what chain or shackles were used, they didnt even want to see it.
If I go and get some stamped chain I wouldn't be able to get a shackle big enough to cover the
camper weight.
I bet most caravans and camper trailers would fail the AS set, but who cares seems nobody
$40,000 CT and a $2 shackle =