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Harken 57 mm Carbo Ratchamatic Block H2625

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Harken 57 mm Carbo Ratchamatic Block H2625
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The Carbo Ratchamatic® is a load-sensing ratchet block that rolls freely in both directions under low loads and automatically engages the ratchet as loads increase. Shifting between ratchet and light-air modes is seamless.

Standard grip: medium/light air; 10:1 holding power.

  • Sheave: 57 mm / 2 1/4 in
  • Length: 103 mm / 4 1/16 in
  • Weight: 104 g / 3.7 oz
  • Shackle pin: 5 mm / 3/16 in
  • Maximum line: 10 mm / 3/8 in
  • Maximum working load: 227 kg / 500 lb
  • Breaking load: 907 kg / 2000 lb
  • Holding power: 10:1


This fitting is commonly used and/or recommended for the following one design sailboat applications:

  • 505s Mainsheet Block (x1)
  • Etchells Mainsheet Block (x1)
  • Flying Scot Mainsheet Block (x1)
  • J/22 Mainsheet Rachet Block (x3)
  • Lightning Mainsheet Block (x1)
  • MC Scow Boom Block (Aft) (x1)
  • Snipe Mainsheet Boom Block (x1)


Ratchet Block
57 mm

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