Harken 404 16mm single ball bearing sailing block for dinghy control lines Harken 404 16mm single ball bearing sailing block for dinghy control lines
Harken 404 16mm single ball bearing sailing block for dinghy control lines Harken 404 16mm single ball bearing sailing block for dinghy control lines
Harken 404 16mm single ball bearing sailing block for dinghy control lines
Harken 404 16mm single ball bearing sailing block for dinghy control lines

Harken

Harken 404 16mm Single Ball Bearing Block

$40.90 $39.90 Save 2%
Tax included.

The Harken 404 16mm Single Block is the smallest block in Harken's renowned ball bearing range, delivering exceptional performance for lightweight sailing applications. Specifically engineered for small synthetic control lines, this compact block is widely used on racing dinghies, skiffs, catamarans, trailer yachts and performance keelboats where low friction, minimal weight and maximum efficiency are essential.

Featuring a 16mm sheave with Harken's patented stainless steel ball bearing system, the 404 provides smooth line movement while maintaining excellent strength for its size. The captive grooved bearing race securely retains the bearings, while an integrated O-ring keeps the rope seated in the sheave during intermittent loading, making it ideal for constantly adjusted sail controls.

Designed for rope up to 5mm diameter, the Harken 404 combines compact dimensions with reliable performance, making it one of the world's most popular micro sailing blocks for precision control systems.

Key Features

  • Genuine Harken Part No. 404
  • Single 16mm sheave
  • Patented stainless steel ball bearing system
  • Captive grooved bearing race
  • O-ring retains line during intermittent loading
  • Compact, lightweight design
  • Accepts rope up to 5mm diameter
  • Ultra-low friction operation
  • Excellent strength-to-weight ratio
  • Corrosion-resistant marine construction
  • Maintenance-free design
  • Genuine Harken quality

Why Buy from Barton Marine NZ?

Barton Marine NZ supplies genuine Harken sailing hardware trusted by sailors throughout New Zealand. Whether you're upgrading a racing dinghy or replacing worn-out control-line hardware, the Harken 404 delivers smooth performance, long service life and proven reliability.

Ideal for:

  • Racing dinghies
  • Optimists
  • ILCA / Laser class yachts
  • Skiffs
  • Catamarans
  • Trailer yachts
  • Sports boats
  • Performance cruising yachts

Technical Specifications

Feature Specification
Brand Harken
Part Number 404
Product Type Single Ball Bearing Block
Sheave Diameter 16mm
Number of Sheaves 1
Becket No
Maximum Rope Diameter 5mm
Overall Length 29mm
Weight 10g
Maximum Working Load 113kg
Breaking Load 544kg
Bearing System Stainless Steel Ball Bearings
Line Retention O-ring
Marine Suitable Yes

Common Applications

The Harken 404 is ideal for:

  • Cunningham controls
  • Outhaul systems
  • Downhaul controls
  • Traveller control lines
  • Spinnaker pole trip lines
  • Leech line controls
  • Halyard deflectors on small boats
  • Dinghy sail controls
  • Lightweight purchase systems
  • Custom rigging applications

Performance Benefits

The Harken 404 delivers:

  • Extremely smooth, low-friction operation
  • Lightweight hardware for improved boat performance
  • Reliable line retention under intermittent loads
  • Excellent durability in harsh marine environments
  • Precision trimming for modern control systems
  • Outstanding strength for its compact size
  • Minimal maintenance requirements
  • Proven Harken engineering trusted worldwide