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M2 Mantus Chain Hook

The Smartest Bridle Hook for your boat!

  • The M2 Chain Hook, or chain grabber securely latches to the chain even when chain is unloaded, making it much safer than standard chain hooks that often fall off.
  • The M2 Hook is made from 2205 Duplex, thus withstanding the harsh marine environment and is the strongest hook on the market.
  • The chain grabber is safe, designed to be as strong as high test chain.
  • Ideal for use with a snubber or a bridle.
  • Fits BBB, Proofcoil, Hi Test and Stainless Chain.
  • Available for 1/4, 5/16, 3/8, and 1/2 inch chain.
1/4 Inch Hook Dimensions
5/16 Inch Hook Dimensions
3/8 Inch Hook Dimensions
1/2 Inch Hook Dimensions

Hook Sizing Recommendations

Hook Size WLL UBS Shackle (Size) Recommended Bridle Rope  
1/4 in (6-7mm) 1,686 lbs 6,744 lbs 3/8 in or 7/16 in Shackle 1/2 in
5/16 in (8mm) 3,788 lbs 15,154 lbs 7/16 in Shackle 5/8 in
3/8 in (10mm) 5,516 lbs 22,066 lbs 1/2 in Shackle 3/4 in
1/2 in (12-13mm) 9,271 lbs 37,085 lbs 5/8 in Shackle 1 in

The safety factor we use to determine the safe working load is 4, where other manufacturers use the safety factor of 3 or lower thus UBS is the best way to compare strength between products.

The material properties of the carbon steel we use when manufacturing galvanized steel hook are the very similar to 316 stainless steel, thus the WLL and UBS values are practically the same for the galvanized and stainless steel hooks.

These strength ratings are lower then previously reported: see why here

Shackles are included with the hooks

Galvanized Shackle WLL UBS Stainless Steel Shackle WLL UBS
7/16 3,300 lbs 19,800 lbs 7/16 2000 lbs 10,000 lbs
1/2 4,400 lbs 26,400 lbs 1/2 3000 lbs 15,000 lbs
5/8 7,150 lbs 42,900 lbs 5/8 4000 lbs 20,000 lbs