The Ronstan RF1034 Halyard Shackle (5/16" Pin) is a heavy-duty, high-load snap shackle designed for fast and secure halyard and rigging connections on performance and offshore sailing yachts. Featuring a spring-loaded snap mechanism with lever-action release, it allows quick one-handed operation—even under load—making it ideal for demanding sailing environments.

Precision-engineered from marine-grade 316 stainless steel, the RF1034 offers exceptional corrosion resistance and long-term durability in New Zealand’s harsh saltwater conditions. Its closed-eye design retains the halyard securely, while the captive pin system prevents accidental loss during operation.

With significantly higher load capacity than smaller models, this shackle is ideal for mainsail halyards, headsails, sheets, and control systems on larger yachts and performance rigs.

Key Features

• Heavy-duty snap shackle design for high-load applications
• Quick-release lever action for fast, one-handed operation
• 316 stainless steel construction for superior corrosion resistance
• Captive pin system prevents accidental loss
• Closed-eye head keeps halyard securely attached
• High strength-to-weight ratio for performance sailing
• Ideal for halyards, headsails, sheets, and offshore rigging systems

Specifications

• Pin Diameter: 7.9mm (5/16")
• Material: 316 Stainless Steel
• Working Load Limit: 1600kg
• Breaking Load: 3200kg
• Length: approx. 39mm pin length
• Internal Width: approx. 20mm
• Weight: approx. 90g
• Closure Type: Lever-action snap lock

Why Choose the Ronstan RF1034? 

For New Zealand sailors handling higher loads, the RF1034 provides a strong, reliable, and easy-to-use halyard connection solution. Its larger 5/16" pin and high load rating make it ideal for offshore yachts and performance sailing setups where failure is not an option.

Designed to perform in demanding coastal and offshore conditions, this shackle delivers maximum strength, reliability, and ease of use—trusted by sailors worldwide.