40mm Carbo Ratchet Block with Becket
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HARKEN40mm Carbo Ratchet Block with Becket


Fulfilled from vendor
Model # 5367172 | Mfg # 2609UPC # 97653084105


40mm Carbo Ratchet Block with Becket

Name Value
Ball Bearings Plastic
Becket Becket
Diameter 3/8 Inch or 10 mm
Direction Any
Integral Cleat No Integral Cleat
Length 4 Inches
Mount Type Swivel Shackle
Ratchet Ratcheting
Safe Working Load 300 Pounds
Sheave Diameter 40 mm
Type Single
Weight 1.8 Ounces

Product Overview

Harken 40mm Carbo Ratchet Block with Becket and recessed switch allows changes in the modes between ratchet and free spin.

Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. Lightweight Carbo Ratchets are available in 40mm, 57mm and 75mm sizes. All the Carbo Ratchets feature a recessed On-Off switch that is easily operated from either side. The 40mm cam-arm versions work in ratchet mode only. Commonly 40mm blocks are for jibsheets and spinnakers on small dinghies.  

The 40mm, 57mm and 75mm Carbo Ratchamatic® is adjustable for many applications and weather conditions. The load-sensing ratchet block rolls freely in both directions under low loads, then engages the ratchet automatically as loads increase. With 180 degree wrap, you get a 10:1 holding power. 

Key Features

  • Ratchet blocks are hand and crew savers
  • Allows a line to be eased instantly with control 
  • On/Off switch allows the ratchet to be turned off in light air 
  • Hardkote-anodized aluminum sheaves
  • Stainless steel swivel shackle
  • Sheave Diameter: 1 9/16" (40 mm)
  • Max. Line Diameter: 3/8" (10 mm) 
  • Max. Working Load (MWL): 300 lb. (136 kg)   
  • Breaking Load: 1000 lb. (454 kg)
  • Weight: 1.8 oz. (52 g)
  • Length: 4" (102 mm)


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