Harken Double Carbo Block with Swivel/Becket 2639 - 40mm

The Harken 40 mm double block features a becket with a 2:1 purchase as well as two sheaves to hold 10 mm ropes.

Harken low friction carbo air Blocks are lightweight, strong, reliable and affordable. Companions to the popular Harken black magic block line, these small, compact blocks have very high working loads for safe, easy trimming.

Common uses: Main/jib Sheets, Mainsheet Fine-Tune, Outhauls, Cunninghams, Vangs, Control Lines.

• Glass-filled nylon sideplates: load-carrying curved bearing races.
• Integral becket allows 2:1 or 3:1 purchase.
• Patented Harken U-Locks holds the swivel in front/side position, or lets block spin freely.

Specifications

• Sheave diameter: 1 9/16" (40 mm)
• Length: 4 5/16" (110 mm)
• Weight: 3.4 oz. (90 g)
• Shackle pin diameter: 3/16" (5 mm)
• Maximum line diameter: 3/8" (10 mm)
• Maximum working load: 970 lb (440 kg)
• Breaking load: 2380 lb (1080 kg)

Technical Files

Instruction Manual
Instruction Sheet