Harken
Harken 407 16mm Double Block with Becket Ball Bearing Pulley
The Harken 407 16mm Double Block with Becket is a compact, ultra-lightweight ball bearing sailing block designed for high-performance dinghies, skiffs, catamarans, and trailer yachts using small-diameter synthetic control lines. Incorporating Harken's patented stainless steel ball bearing system and an integrated becket, this block allows efficient multi-part purchase systems while maintaining exceptionally smooth operation under load.
The integrated becket provides a secure dead-end attachment point for control lines, making the Harken 407 ideal for compact tackle systems such as cunninghams, outhauls, vangs, traveller controls, downhauls, and other precision sail controls. The captive bearing race keeps the stainless steel ball bearings securely retained while minimising rolling friction for effortless trimming.
As part of Harken's renowned 16mm block range, the 407 offers an outstanding strength-to-weight ratio while remaining one of the smallest double blocks available. Its corrosion-resistant construction and maintenance-free bearing design make it an excellent choice for demanding racing and cruising applications in New Zealand conditions.
Key Features
- Genuine Harken Part No. 407
- Twin 16mm sheaves
- Integrated becket for purchase systems
- Patented stainless steel ball bearing system
- Captive grooved bearing race
- Extremely low friction operation
- Lightweight compact construction
- Accepts rope up to 5mm diameter
- Ideal for modern synthetic control lines
- Excellent strength-to-weight ratio
- Maintenance-free operation
- Genuine Harken quality
The Harken 407 features a 16mm sheave diameter, 54mm overall length, accepts 5mm line, weighs 28g, has a 204kg maximum working load, and a 544kg breaking load.
Why Buy the Harken 407 from Barton Marine NZ?
At Barton Marine NZ, we supply genuine Harken sailing hardware trusted by New Zealand sailors for both racing and cruising. The Harken 407 provides a lightweight, reliable solution for compact purchase systems where smooth operation and minimal friction are essential.
Ideal for:
- Racing dinghies
- Skiffs
- Catamarans
- Trailer yachts
- Cunningham systems
- Outhaul systems
- Boom vang purchases
- Traveller controls
- Downhaul systems
- Lightweight sail-control systems
Technical Specifications
| Feature | Specification |
|---|---|
| Brand | Harken |
| Part Number | 407 |
| Product Type | Double Ball Bearing Block with Becket |
| Sheave Diameter | 16mm |
| Number of Sheaves | 2 |
| Becket | Yes |
| Maximum Rope Diameter | 5mm |
| Overall Length | 54mm |
| Weight | 28g |
| Maximum Working Load | 204kg |
| Breaking Load | 544kg |
| Bearing System | Stainless Steel Ball Bearings |
| Marine Suitable | Yes |
Published Harken specifications list a 16mm sheave, 54mm overall length, 28g weight, 5mm maximum rope diameter, 204kg working load, and 544kg breaking load.
Common Applications
The Harken 407 is ideal for:
- Cunningham purchase systems
- Outhaul purchases
- Boom vang systems
- Traveller control purchases
- Downhaul systems
- Barber haulers
- Centreboard controls
- Daggerboard controls
- Dinghy sail controls
- Lightweight cascade systems
Performance Benefits
The Harken 407 delivers:
- Smooth low-friction line handling
- Efficient compact purchase systems
- Excellent strength for its size
- Lightweight rigging
- Reliable performance under load
- Long service life
- Corrosion-resistant construction
- Proven Harken engineering
The addition of the integrated becket makes the 407 particularly well suited to compact multi-part purchase systems, allowing sailors to achieve greater mechanical advantage without increasing rigging complexity.
