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Harken 75mm Ratchamatic Flip-Flop Block w/ Cam Cleat

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Harken 75mm Ratchamatic Flip-Flop Block w/ Cam Cleat
SKU #: HK_HAR2689

Regular Price: $380.00

Special Price $334.99

Availability: In stock

Harken small boat Flip-Flop blocks pivot around the line axis to keep line close to the deck. Hinged construction allows for various lead angles. 

Lightweight, machined 6061-T6 aluminum cheeks pivot on fiber-reinforced plastic chocks. Sheave runs exclusively on a ball bearing system for fast trim and release under any load. Ball bearings, sheave, and sideplates are UV-stabilized with carbon black for maximum protection. 

The Harken Ratchamatic version rolls freely in both directions under low loads and automatically engages a ratchet mechanism as loads increase, giving sailors a holding power of up to 15:1. The ratchet engagement can be adjusted to a higher or lower load depending on the sailor’s strength, sailing style and system usage. 

Reversible cam arms adjuts and lock in a wide range of positions for crew accessibility and accommodatin of changing lead angles.




  Imperial Metric
Sheave Diameter 3 in 75 mm
Max Line Diameter 7/16 in 12 mm
Max Working Load* 300 lb 136 kg
Breaking Load* 600 lb 272 kg
Weight 18 oz 514 g
Length 5 5/8 in 143 mm
Width 2 5/8 in 67 mm
Height 5 3/8 in 137 mm

*Maximum working loads and breaking loads for blocks based on cam strengths.

Additional Information

Additional Information

Brand Harken
Gender No
Location No
Activity No
Material No
Max Working Load 300lb / 136kg
Max Line Diam 12 mm (7/16")
Length No