Harken
Harken 405 16mm Single Block with Becket Ball Bearing Pulley
The Harken 405 16mm Single Block with Becket is an ultra-lightweight, high-performance sailing block designed for small synthetic control lines found on modern dinghies, skiffs, catamarans, sports boats, and performance yachts. As part of Harken's renowned 16mm Micro Block range, the 405 combines exceptional strength with remarkably low weight, making it ideal for precision sail controls where every gram counts.
The integrated becket provides a convenient attachment point for the standing end of a control line, making the block perfect for compact purchase systems such as cunninghams, outhauls, downhauls, leech lines, traveller controls, and vang systems.
Harken's patented bearing system features stainless steel ball bearings running in a captive grooved race, delivering smooth, low-friction operation while securely retaining the bearings during normal use. Designed for control lines up to 5mm, the Harken 405 provides outstanding efficiency and durability for demanding sailing applications.
Whether you're upgrading a racing dinghy or replacing worn control-line hardware, the Harken 405 offers the legendary performance, reliability, and quality trusted by sailors worldwide.
Key Features
- Genuine Harken Part No. 405
- Single 16mm low-friction sheave
- Integrated becket
- Patented stainless steel ball-bearing system
- Captive grooved bearing race
- Compact, lightweight construction
- Handles rope up to 5mm diameter
- Extremely smooth operation
- Excellent strength-to-weight ratio
- Corrosion-resistant marine construction
- Maintenance-free design
- Genuine Harken quality
The Harken 405 is Harken's smallest block and is specifically engineered for small synthetic control lines, offering excellent performance in lightweight sailing applications.
Why Buy the Harken 405 from Barton Marine NZ?
At Barton Marine NZ, we stock genuine Harken sailing hardware trusted by New Zealand sailors for racing and cruising. The Harken 405 is an excellent choice for compact purchase systems where smooth trimming, lightweight construction, and dependable performance are essential.
Ideal for:
- Racing dinghies
- Skiffs
- Catamarans
- Trailer yachts
- Cunningham systems
- Outhaul controls
- Downhaul systems
- Traveller controls
- Leech line systems
- Lightweight purchase systems
Technical Specifications
| Feature | Specification |
|---|---|
| Brand | Harken |
| Part Number | 405 |
| Product Type | Single Ball Bearing Block with Becket |
| Sheave Diameter | 16mm |
| Number of Sheaves | 1 |
| Becket | Yes |
| Maximum Rope Diameter | 5mm |
| Overall Length | 38mm |
| Weight | 12g |
| Maximum Working Load | 113kg |
| Breaking Load | 544kg |
| Bearing System | Stainless Steel Ball Bearings |
| Marine Suitable | Yes |
These specifications are published by Harken for the 405 16mm Single Block with Becket.
Common Applications
The Harken 405 is ideal for:
- Cunningham purchase systems
- Outhaul controls
- Downhaul systems
- Leech line controls
- Traveller control lines
- Vang purchase systems
- Spinnaker pole trip lines
- Dinghy control systems
- Small yacht sail controls
- Custom lightweight purchase systems
Performance Benefits
The Harken 405 delivers:
- Ultra-low friction line handling
- Lightweight rigging performance
- Compact installation
- Smooth trimming under load
- Excellent strength for its size
- Long service life
- Minimal maintenance
- Proven Harken engineering
Its integrated becket makes it easy to create compact purchase systems while maintaining excellent efficiency and reducing overall hardware weight.
