Description
Harken 57mm Aluminum Narrow Mastcollar ESP Block (8mm pin)
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.
Technical Description
| 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) | 99 g |
| Weight (oz) | 3.5 oz |
| 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 |
| Clevis pin Ø (mm) | 8 mm |
| Clevis pin Ø (in) | 5/16 in |
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