Harken 1540 Midrange Single Block with Swivel Blocks - 76mm

The Harken 1540 is a 76mm (3") Midrange Single Block engineered for demanding sailing applications aboard medium to large offshore boats. Built with Harken's proven Midrange construction, this block delivers smooth, reliable performance under heavy loads where it matters most.

The sheave runs exclusively on a Delrin® ball bearing system, enabling fast trim and effortless release under any load condition. UV-stabilized carbon-black Delrin® ball bearings, sheave, and sideplates provide long-lasting protection against sun and saltwater degradation. A stainless steel sidestrap wraps across the block head for added structural strength and safety.

Key Specifications:

• Sheave Diameter: 76mm / 3"
• Maximum Line Diameter: 14mm / 9/16"
• Maximum Working Load: 1800 lb / 816 kg
• Bearing System: Delrin® ball bearings
• UV-stabilized sideplates and sheave
• Stainless steel sidestrap for increased strength

Common Applications:

• Mainsheet systems
• Spinnaker sheet blocks
• Mastbase halyard lead blocks
• Control lines on offshore sailboats

The Harken 1540 Midrange Single Block is a trusted choice for sailors who demand dependable load handling and smooth operation in any conditions.