The Mantus Mooring Snap Shackle is designed to easily and securely attach a boat to a mooring ball. Simply load floating mooring line or the metal ring into the snap shackle, close the gate and the pin snaps closed, finally, lock the pin for extra safety. The Mantus Mooring Snap Shackle features a locking pin to ensure the gate stays locked once secured. We believe these mooring shackles are the strongest and the smartest way to moor your boat.

  • Made from 2205 Duplex Stainless Steel to be stronger and more corrosion resistant.
  • Features a proprietary secondary pin locking mechanism that ensures the gate stays closed
  • Currently available in 1/2 inch and 5/8 inch version

When you’re out on the water, you’ll be glad to have a reliable mooring shackle to secure your boat. Check out our sizing guides below to make the right choice for your vessel.

We strongly recommend checking the spring once a year, if you need a spare spring you can purchase it here: Mooring Snap Shackle Springs

Mooring Snap Shackle Sizing Table

Snap Shackle SizeAnchor Shackle SizeRecommended for
Chain Size
Recommended for boats with following Anchor Line SizesSnap Shackle Breaking Strength
1/2 inch1/2 inchUp to 3/8 inch (10mm)1/2 inc – 3/4 inch (12mm – 20mm)7.4 T / 16,300 lbs
5/8 inch5/8 inchUp to 1/2 inch (13mm)3/4 inch – 1 inch
(20mm – 25mm)
10T / 22,000 lbs

1/2 Inch Snap Shackle Dimensions

5/8 Inch Snap Shackle Dimensions


WITHIN THE US: 1-855-262-6887
BEYOND THE US: 469-226-3468 / 469-878-4083

More Mantus Products

Download the Mantus Catalog

Download the Mantus Catalog