Product

HARKEN BLOCK 57MM NARROW MAST COLLAR

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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

Sheave Ø (in)
2 1/4 in

Length (mm)
89 mm

Length (in)
3 1/2 in

Width (mm)
59 mm

Width (in)
2 5/16 in

Weight (g)
94 g

Weight (oz)
3.3 oz

Clevis pin Ø (mm)
6 mm

Clevis pin Ø (in)
1/4 in

Maximum line Ø (mm)
10 mm

Maximum line Ø (in)
3/8 in

Maximum working load (kg)
748 kg

Maximum working load (lb)
1650 lb

Breaking load (kg)
1497 kg

Breaking load (lb)
3300 lb