Mantus Swivels


The strongest link – the Mantus anchor swivels are stronger than the corresponding grade 40 chain. (WLL is 1/5 UBS)


Integrated swivel shackle design completely eliminates side loading, making this the safest anchor swivel on the market.

On the chain side of the swivel, the pin is the strength-limiting part since the geometry of the chain determines the pin size.

These anchor swivels and shackles are the first to feature an oblong pin to maximise the pin strength. With the aid of computer modelling and physical testing, Mantus have truly created a swivel that is the strongest link.


Note the innovative shackle bolt design – no shackle dog! Designed with a slim hex head design (with holes for safety wire), it offers a slimmer profile making it easier for translating through your bow roller.

  • 316L stainless steel, precision cast and electro-polished body
  • Pin made from duplex stainless steel and is mechanically polished and electro-polished.

UBS -Ultimate Breaking Strength (lb) WLL – Working Load Limit (lb) WLL Inflated* – Working Load Limit inflated using a a different safety factor than is standard. See note below.
*Grade 40/70 chain types claim inflated working load limit values. Typically, chains working load limit is calculated as 1/4th of the ultimate breaking strength.

Published WLL for Grade 70 /Grade 40 chain are calculated using the safety factor of 3, or UBS/3 = WLL. (G4 HT) is only 50% stronger than G30 chain and Grade 70 chain is only 20% stronger than G40 chain and 85% stronger than G30 chain. Thus, WLL values we use to size you with the correct swivel are WLL = UBS/4 regardless of the chain type.

For Mantus Swivels, we use a safety factor of 5 when determining the WLL recommendations.

Swivel-Assmebly-Insructions Swivel-Assmebly-Insructions