Harken 57mm Aluminum Narrow Teardrop Mast Collar Block - 8mm pin

(No reviews yet) Write a Review
Current Stock:

Cruising ESP blocks complement our existing blocks in looks and function, but are simpler in design and construction. Sheaves feature sleeve bearings to handle high static loads and are ideal for halyards or limited purchase systems on cruising boats.


Sheave Ø (mm) 57 mm
Length (mm) 89 mm
Width (mm) 59 mm
Weight (g) 99 g
Clevis pin Ø (mm) 8 mm
Maximum line Ø (mm) 10 mm
Maximum working load (kg) 748 kg
Breaking load (kg) 1497 kg



Need help to design your Harken system - take a look here for the Harken System Guides and Drawings 

Or perhaps you need some other information (load calculators, block selectors, service instructions or manuals)?   Take a look here for all the official Harken Support Information