Harken 348 29mm Carbo Air Single Block Fixed Head

The Harken 348 is a 29mm Carbo Air® Single Block with fixed head attachment, designed for high-performance sailing applications where weight savings and strength are critical. This innovative block features fiber-reinforced composite construction that delivers an exceptional strength-to-weight ratio, making it ideal for jib and mainsheet systems on racing dinghies and high-load control lines on small keelboats.

Key Features:

• Lightweight construction at just 0.8 oz (23 g)—30% lighter than equivalent conventional blocks
• 60% stronger than comparable classic blocks with 1000 lb breaking load
• UV-stabilized high-strength resin sideplates for durability
• Low-friction sheave design for smooth line handling
• 29mm (1 1/8") sheave diameter optimized for small-diameter racing lines
• Fixed head attachment with stainless steel swivel shackle
• Maximum working load: 330 lb (150 kg)
• Accommodates lines up to 5/16" (8 mm) diameter
• Compact 1 15/16" (49 mm) length profile

Award-Winning Design:

The Carbo Air® series has earned both the prestigious Dame Award and Sail Magazine's Freeman-Pittman Award for innovation. These blocks represent Harken's commitment to pushing the boundaries of marine hardware engineering, delivering race-proven performance in a compact, reliable package.

Applications:

Perfect for 2:1 or 3:1 purchase systems on performance-oriented sailing vessels. The small footprint and high load capacity make this block an excellent choice for racers seeking every competitive advantage through weight reduction without compromising reliability.