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Harken 2642 40mm Carbo Air Double Block Fixed Sailing Block

Manufacturer

Harken

<h3>About Harken: Performance Marine Hardware Since 1967</h3><p><strong>Harken</strong> is one of the most recognized names in performance marine hardware, with a legacy stretching back to 1967. <a href="/14853-harken">Harken</a> was founded in a 60-foot trailer by brothers Peter Harken and Olaf Harken, who set out to engineer better sailboat hardware than anything the market had to offer. Their early breakthrough — the plastic recirculating ball bearing block — redefined how sailors managed lines under load and launched a brand that would go on to dominate competitive sailing at the highest levels.</p><p>Headquartered in Pewaukee, Wisconsin, and with a major manufacturing facility in Limido Comasco, Italy, Harken operates as an employee-owned company with distribution spanning 48 countries. From club racing dinghies to grand prix offshore programs, Harken hardware has been aboard winning boats for decades — making its Olympic and America's Cup debuts in 1976 and 1977, respectively.</p><h3>A Full Range of Marine Hardware</h3><p>Harken's product lineup is broad by design. The company works hard to be the technological leader in sailboat blocks, deck hardware, winches, and hydraulics, as well as safety and rescue equipment and services. Their marine catalog includes small boat and big boat blocks, travelers and genoa leads, mainsail and headsail handling systems, winches, hydraulics, mooring solutions, and a robust line of spare parts and accessories.</p><p>At the core of it all are Harken's renowned <a href="/14853-harken-pulleys-blocks-200822">Pulleys &amp; Blocks</a> — the product category that started it all. Whether you're outfitting a high-tech racing dinghy or a bluewater cruising yacht, Harken blocks are engineered for high-load capacity, corrosion resistance, and the smoothest possible operation. The lineup spans sheave sizes from 16 mm all the way to 75 mm, with single, double, triple, fiddle, and soft-attach configurations to cover virtually every application on deck.</p><p>Beyond sailing, Harken also produces a dedicated line of sportfishing <a href="/14853-harken-pulleys-blocks-202394">Pulleys &amp; Blocks</a> engineered for the unique demands of offshore fishing. These compact, high-load pulleys are built for outrigger systems, dredge rigging, and heavy-duty line management — bringing the same patented bearing technology that excels on race courses to the rigors of the fishing cockpit.</p><h3>Why Sailors Trust Harken</h3><p>What sets Harken apart is a relentless commitment to engineering. Each product category is developed with input from top sailors, sailmakers, and boat designers — and the results speak for themselves on race courses worldwide. Harken hardware is a consistent fixture on America's Cup campaigns, Volvo Ocean Race fleets, Olympic classes, and everything in between. For cruisers, that race-proven performance translates into gear that is more reliable, longer-lasting, and more responsive than the alternatives.</p><ul><li>Employee-owned company with decades of marine engineering expertise</li><li>Manufacturing in the USA and Italy, with global distribution in 48 countries</li><li>Patented bearing systems engineered for high loads and minimal friction</li><li>Product lines covering everything from small dinghies to superyachts</li><li>Trusted at the Olympic Games and America's Cup since the 1970s</li></ul>

Part Number

2642
07/13/2036 1:42 AM
Sale Price

$69.03

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Product Details

The Harken 2642 40mm Carbo Air® Double Block (Fixed) is a high-performance sailing block engineered for low friction, exceptional strength, and minimal weight. Designed as a companion to the popular Harken Big Boat block line, this compact double block delivers very high working loads for safe, precise sail trimming on a wide range of vessels.

Built from UV-stabilized, high-strength resin composite sideplates, the Carbo Air® construction is consistently 30% lighter and 60% stronger than equivalent Classic blocks—making it the go-to choice for performance sailors and racers who demand reliable hardware without unnecessary weight. The fixed head configuration keeps the block stable and secure under load, ideal for applications where swivel movement is not required.

Key Features:

  • Supports 2:1 or 3:1 purchase systems for versatile rigging configurations
  • 40mm sheave diameter (1-9/16 in) for smooth, low-friction line travel
  • Accepts lines up to 10mm (3/8 in) diameter
  • Maximum working load: 970 lb (440 kg)
  • Break load: 1,080 kg for a strong safety margin
  • Fixed head design for stable, high-load applications
  • UV-stabilized high-strength resin construction resists marine environment degradation
  • Lightweight at just 80g (2.8 oz)
  • Winner of the Dame Award and Sail Magazine's Freeman-Pittman Award for innovation

The Harken 2642 is well-suited for jib and mainsheet systems on high-performance dinghies and high-load control lines on small keelboats, offering the ideal combination of strength, weight savings, and durability for competitive and recreational sailors alike.

Specifications:

  • Sheave Diameter: 40mm / 1-9/16 in
  • Maximum Line Diameter: 10mm / 3/8 in
  • Shackle Pin Diameter: 5mm / 3/16 in
  • Maximum Working Load: 440 kg / 970 lb
  • Break Load: 1,080 kg
  • Length: 89mm / 3-1/2 in
  • Weight: 80g / 2.8 oz

Products specifications

Type

Double

Diameter

3/8 Inch or 10 mm

Length

3 1/2 Inches

Mount Type

Side Shackle

Ball Bearings

Plastic

Becket

No Becket

Direction

Any

Integral Cleat

No Integral Cleat

Ratchet

Non Ratcheting

Safe Working Load

970 Pounds

Sheave Diameter

40 mm

Timeley shipping of product.

Very good recieved order quick informed there was a small delay still recieved the part in a week

Quick shipping. Highly recommended!

Great prices and exceptional delivery, think the order was delivered before I clicked submit ;)

Totally satisfied start to finish. I'll buy from them again.

great experience

These peeps were great.Very fast shipping and very fair price. Would buy from them again and again!!!

N/A

Good

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