mouseover to enlarge

Narrow Halyard & Steering Sheaves

102 mm Masthead Sheave

Part No. C6725
$421.00$105.32  Limited Quantities In Stock
Sheave Ø (mm)102 mm
Sheave Ø (in)4 in
Maximum line Ø (mm)10 mm
Maximum line Ø (in)3/8 in
Maximum working load (kg)3207 kg
Maximum working load (lb)7068 lb

Narrow high-load sheaves in mastheads improve sail handling, speed sail changes, and allow the use of smaller, lighter halyard winches. Sheaves combine sideload-carrying balls with a PTFE composite bushing for radial loads.

Sheave Ø (mm)102 mm
Sheave Ø (in)4 in
Width (mm)19 mm
Width (in)3/4 in
Weight (g)205 g
Weight (oz)7.23 oz
Center pin Ø (mm)19.1 mm
Center pin Ø (in).75 in
Maximum line Ø (mm)10 mm
Maximum line Ø (in)3/8 in
Maximum working load (kg)3207 kg
Maximum working load (lb)7068 lb
FootnoteBreaking load based on use of solid 304 stainless shafts. 

DO NOT use Harken equipment for human suspension unless product is specifically certified and labeled for such use.

  • United States
  • Australia
  • France
  • Italia
  • New Zealand
  • Polska
  • Sverige
  • UK