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.


Hook Sizing Recommendations

Hook SizeWLLUBSShackle (Size)Recommended Bridle Rope 
1/4 in (6-7mm)1,686 lbs6,744 lbs3/8 in or 7/16 in Shackle1/2 in
5/16 in (8mm)3,788 lbs15,154 lbs7/16 in Shackle5/8 in
3/8 in (10mm)5,516 lbs22,066 lbs1/2 in Shackle3/4 in
1/2 in (12-13mm)9,271 lbs37,085 lbs5/8 in Shackle1 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 ShackleWLLUBSStainless Steel ShackleWLLUBS
7/163,300 lbs19,800 lbs7/162000 lbs10,000 lbs
1/24,400 lbs26,400 lbs1/23000 lbs15,000 lbs
5/87,150 lbs42,900 lbs5/84000 lbs20,000 lbs