57mm ESP Single Block, Swivel
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HARKEN57mm ESP Single Block, Swivel


In stock online.
Model # 5320320 | Mfg # 6059UPC # 97653100935
57mm ESP Single Block, Swivel




57mm ESP Single Block, Swivel

Name Value
Ball Bearings Torlon
Becket No Becket
Diameter 5/8 Inch or 16 mm
Direction Any
Integral Cleat No Integral Cleat
Length 5 1/2 Inches
Mount Type Swivel Shackle
Ratchet Non Ratcheting
Safe Working Load 2500 Pounds
Sheave Diameter 57 mm
Type Single
Weight 7.7 Ounces

Product Overview

Harken 57mm ESP Single Block with sleeve bearings to handle high static loads. 

Designed to handle the high loads generated by modern racing and cruising boats, ESP blocks feature sleeve bearings to ensure smooth, hitch-free performance under high load and heavy winds. Simple design and construction for handling high static loads on cruising boats. Ideal for halyards or limited purchase systems on cruising boats. Aluminum or polished stainless steel.

Key Features 

  • Carbon-black Torlon ball bearings
  • Long-glass engineered plastic Sheave
  • Contained-axle sleeve 
  • Stainless steel swivel shackle
  • Sheave Diameter: 2 1/4" (57 mm) 
  • Max. Line Diameter: 5/8" (16 mm)  
  • Max. Working Load (MWL): 2205 lb. (1000 kg)  
  • Breaking Load: 4409 lb. (2000 kg)   
  • Weight: 7.7 oz. (218 g) 
  • Length: 5 1/2" (140 mm)


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