Manufacturer part #: 691
Technical Description
3 in
76 mm
5/8 in
16 mm
4 1/2 oz
128 g
1/2 in
12.70 mm
3/8 in
10 mm
3/16 in
5 mm
4000 lb
1814 kg
16500 lb
7484 kg
Manufacturer part #: 691
Narrow high-load sheaves in mastheads improve sail handling, speed sail changes, and allow the use of smaller, lighter halyard winches. Used in steering systems, these sheaves return "feel" to wheel-steered boats.
Sheaves combine sideload-carrying balls with a Teflon® composite bushing for radial loads. These durable sheaves are made of 6061-T6 aluminum and are well-suited for masthead and steering installations. Installation requires clamping or securing inner race.
Use for: Masthead/halyard sheaves Steering systems
Narrow high-load sheaves in mastheads improve sail handling, speed sail changes, and allow the use of smaller, lighter halyard winches. Used in steering systems, these sheaves return "feel" to wheel-steered boats.
Sheaves combine sideload-carrying balls with a Teflon® composite bushing for radial loads. These durable sheaves are made of 6061-T6 aluminum and are well-suited for masthead and steering installations. Installation requires clamping or securing inner race.
Use for: