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Mantus Hex Head Shackles

Mantus Hex Head Shackles

Bow shape for articulation

Forged Marine Grade 316 stainless steel manufacture

Flush hexagon head for snag-free passage over the bow roller

Hex Head with hole for seizing wire

See below for sizing advice

N.B. 1/4", 5/16" and 3/8" will not be available until March 2025

£19.00 -15%

£16.15

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Accessories

Mantus Marine USA has designed a range of very strong stainless steel shackles specifically for mooring and anchoring.

Mantus Hex Head Pin Shackles Facts, Features and Plus Factors:

  • Forged from marine grade 316 stainless
  • Flush head snag-free design
  • Bow shape for articulation
  • Easy to undo the pin, even after many months of use, with a socket wrench or spanner
  • Security hole in the hex head is designed for a monel seizing wire to prevent the pin from loosening

Mantus Hex Head Shackle Sizing Guide:

Mantus recommend using a mantus swivel for connecting Grade 40 chain to an anchor, to match the break loads.

The chain size specified in the table below represents the smallest chain that the shackle will physically fit. 

Mantus Hex Head Pin Anchor Shackle Break Loads:
Shackle Size MBL in lbs MBL in Kg Chain Size
3/8 inch (10mm) 7,500lb 3348kg 10mm
7/16 inch 10000lb 4464kg 10mm
1/2 inch (12/13mm) 15000lb 6697kg 12mm
5/8 inch 20000lb 8928kg 14mm (not confirmed)

MBL = Mantus Marine Published Break Load

Mantus Hex Head Shackle Dimensions

Mantus Hex Head Pin Anchor Shackle Dimensions:
Shackle Size A B C D E F G H
1/4 inch 0.47" 0.31" 1.13" 0.25" 0.78"
5/16 inch 0.53" 0.38" 1.22" 0.31" 0.84"
3/8 inch 0.66" 0.44" 1.44" 0.38" 1.03"
7/16 inch 0.75" 0.5" 1.65" 0.43" 1.14" 1" 1.96" 2.9"
1/2 inch 0.85" 0.62" 2" 0.47" 1.3" 1.24" 2.22" 3.43"
5/8 inch 1.08" 0.74" 2.6" 0.61" 1.69" 1.57" 2.88" 4.25"
  • Shackle Type - Bow Shackle
Ormiston Monel Seizing Wire
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