Anchor Shackle

[Cotemar]

I always recommend using the Crosby G-209A Shackle instead of the standard G-209.

The WLL (Working Load Limit) is almost twice as strong as the standard or no name brands and since you have a very expensive boat hanging on it, what’s a few more dollars.

They also forge the WLL and size onto them, so even years later you will know you have a safe shackle

Here is my current set up with pictures.
5/16 High Tensile G4 Chain. (WLL) is 3900 lbs.
Crosby 7/16, G-209A Shackle (WLL) is 5333 lbs. or 2.6 tons
Rocna 20 kg (44lbs)

I make a small modification to remove the large tab on the bolt that usually gets caught on the bow roller.
I cut it off with a hack saw then I drill a 5/64 dia. hole for tie wire.
Still leaves room to put a wrench on the tab to tighten
I use RUST-OLEUM spray galvanizing paint on the cut section

Here are a few places that carry them
http://www.defender.com/category.jsp...38271&id=33936
http://www.riggingwarehouse.com/products/RIGHARD01/RIGHARD01@@2e22/RIGHARD01@@2e22@@2e04.aspx
http://www.westechrigging.com/shackle-screw-pin-crosby-g-209a-038.html
http://rigging.carpenterrigging.com/viewitems/shackles/g-209a-crosby-alloy-screw-pin-anchor-shackles