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Harken 691 - 76mm Ball Bearing Narrow Sheave
The Harken 691 narrow sheave features ball bearings and a PTFE composite bushing, combining radial load support with sideload carrying. Designed for mastheads, it enhances sail handling, speeds sail changes, and allows the use of smaller halyard winches.
- Sheave Diameter: 3 in (76 mm)
- Width: 5/8 in (16 mm)
- Weight: 4.5 oz (128 g)
- Maximum Line Diameter: 3/8 in (10 mm)
- Maximum Working Load: 4000 lb (1814 kg)
- Breaking Load: 16500 lb (7484 kg)
- Maximum Wire Diameter: 3/16 in (5 mm)
- Center Pin Diameter: 1/2 in (12.7 mm)
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