Harken 16mm Forkhead Block

The Harken 16mm Forkhead Block is the smallest block in Harken's proven rigging system, purpose-built for high-performance synthetic control lines on modern dinghies and small watercraft. Engineered with a patented captive bearing system using stainless steel ball races, this compact block delivers reliable mechanical advantage while maintaining minimal weight and profile—essential for weight-sensitive racing applications and offshore conditions where corrosion and durability directly impact performance.

The 16mm sheave accommodates line up to 5mm diameter with a maximum working load of 250 pounds, making it suitable for mainsheet, jib, or traveler control on small racing dinghies and high-tech boats. At just 0.38 ounces, the minimal weight penalty is crucial where every ounce affects performance and sailing characteristics. The stainless steel ball bearing construction resists salt-air corrosion and delivers smooth load distribution across the race, reducing friction and wear during repeated tacking and sail trim adjustments. The compact footprint—just 1-1/8 inches in length—allows tight integration into control systems with limited deck space.

This block is specified by sailors, boat designers, and riggers who prioritize reliability in competitive and cruising environments where system failure is not an option. The Harken 16mm Forkhead Block fits small dinghy control systems, racing yachts, and any application requiring a lightweight, corrosion-resistant pulley that meets marine-grade durability standards. Part number 376 is the industry-standard reference for this model across marine retailers and sailing professionals.

Harken blocks are recognized across competitive and cruising sailing for engineering precision and proven performance in saltwater environments. The patented ball-bearing design has become the standard in modern rigging, preferred over older design types for lower friction and longer service life in demanding offshore conditions.