Mantus Anchor Shackle - 5/16"

Mantus Anchor Shackles are made of Duplex Stainless Steel and have a Breaking Strength that is five times higher than the working load. These stainless steel anchor shackles are specifically crafted for the task at hand.
• Flush hex head allows for smooth passage through the bow roller
• Socket or crescent wrench could be easily used to open or close the pin even after many months of use
• A hole in the hex head is designed to safety wire the pin to prevent pin loosening.
• Forged from 2205 Duplex stainless steel.

Using stainless steel shackle with galvanized chain:
• When sizing a stainless steel shackle for your anchor and Grade 30 galvanized chain, pick a shackle one size larger than the chain and the shackle will be the same strength as the chain.
• When sizing a stainless steel shackle for your anchor and (G43) Grade 40 galvanized chain, only a shackle one size larger will fit and the shackle will be 60 – 70% the strength of the chain. We recommend using a Mantus swivel to match the strength of the shackle connection to that of the Grade 40 chain.

Using galvanized shackle with galvanized chain:
• When sizing a galvanized steel shackle for your anchor and Grade 30 galvanized chain, pick a shackle the same size as your chain.
• When sizing a galvanized steel shackle for your anchor and Grade 40 galvanized chain, pick an anchor shackle one size larger than the chain and the shackle will be the same strength as the chain.

How do you size an anchor shackle?

The connection between the anchor and chain should be made using a shackle that is one size larger than the chain (e.g., a 1/4 inch diameter chain requires a 3/8 inch diameter shackle). Ensure that the shackle pin is effectively secured with monel wire.