Harken 40mm Double Block — Swivel, Becket 2639

Harken 40mm Double Block — Swivel, Becket 2639

Harken
SKU:
2639
|
UPC:
097653268963
AUD $184.95
AUD $207.70
(You save AUD $22.75 )
Current Stock:
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Description

The Harken 40mm Double Block Swivel Becket 2639 is a compact, high-performance sailing block designed for efficient control systems on dinghies, skiffs and small keelboats. Featuring a swivel head and integrated becket, this block is ideal for creating powerful purchase systems while maintaining smooth, responsive line handling.

Built with Harken’s durable composite construction and free-running 40mm sheaves, the double block delivers low-friction performance under load. The swivel head allows the block to align naturally with the line, reducing twist and wear, while the becket provides a secure termination point for cascading or fine-tune systems.

Well suited to vang systems, mainsheets and control lines, the Harken 40mm Double Block Swivel Becket 2639 offers reliable strength, smooth operation and compact efficiency for performance-focused sailors.

© Boat Crew Gear

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to our popular Harken Big Boat blocks, these small, compact blocks have very high working loads for safe, easy trimming.

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