Description

The Harken 16mm Block with Swivel (Part Number 417) is a compact, lightweight sailing block designed for smooth and efficient handling of small synthetic control lines. As Harken’s smallest block, it is ideal for high-performance dinghies, racing yachts and other sailing applications where low weight, reliable performance and precise line control are essential.

Featuring Harken’s patented bearing system, the block uses stainless-steel balls running in a captive grooved race to minimise friction and support smooth sheave rotation. The integrated swivel allows the block to align naturally with the direction of the rope, helping provide efficient line movement and reducing twisting.

Despite its compact size, the Harken 16mm Swivel Block offers an impressive working load capacity of 113kg, making it a dependable choice for lightweight marine rigging systems.

Key Features and Benefits

• Compact 16mm sheave: Ideal for small control-line systems and lightweight sailing applications.
• Integrated swivel: Allows the block to align with the direction of the rope.
• Stainless-steel ball bearings: Patented bearing system helps reduce friction and improve sheave performance.
• Lightweight construction: Weighs just 18g, minimising additional weight in rigging systems.
• High load capacity: Supports a maximum working load of 113kg.
• Durable design: Built for dependable performance in demanding sailing applications.
• Small rope compatibility: Designed for synthetic control lines up to 5mm in diameter.

Technical Specifications

• Brand: Harken
• Product type: Single block with swivel
• Manufacturer part number: 417
• Sheave diameter: 16mm (5/8 inch)
• Overall length: 46mm
• Weight: 18g
• Maximum rope diameter: 5mm
• Shackle pin diameter: 4mm
• Maximum working load: 113kg
• Breaking load: 339kg
• Bearing system: Stainless-steel ball bearings in a captive grooved race
• Configuration: Single swivel block