Turnbuckles and rigging screws

Turnbuckles and rigging screws are critical components for fine-tuning a sailboat's rigging. They allow for precise adjustment of shroud and backstay tension, directly impacting sailing performance and safety. We offer a comprehensive selection, from simpler bronze models to high-grade AISI 316 stainless steel options, catering to every boat type and sailor's needs.

Material selection is paramount: AISI 316 stainless steel provides superior resistance to marine corrosion, while bronze offers good strength at a lower cost. Precision threading is essential for fine-tuning tension. Always check the working load limit and breaking load, especially when sailing in demanding conditions.

How to Choose the Right Turnbuckle

Several factors influence turnbuckle selection: rigging size, anticipated working load, boat type, and personal preferences. Fixed jaw turnbuckles are robust and reliable, ideal for main shrouds. Swivel jaw turnbuckles offer greater flexibility and easier installation, particularly in confined spaces. Turnbuckles with swage terminals are suitable for smaller diameter wire rope.

Brands like Blue Wave and Osculati are synonymous with quality and long-lasting performance. Before purchasing, always verify the technical specifications and ensure the turnbuckle is compatible with your rigging. Whether you need wire rope tensioners or rope tensioners, we have you covered.

The Officina Basile Tip

* Replace turnbuckles every 5-7 years, or sooner if you notice signs of wear or corrosion.
* Regularly lubricate the threads with marine grease to prevent seizing.
* Check shroud tension before each sailing trip.
* Use turnbuckle covers to protect them from UV rays and the elements.

• Fast shipping throughout Italy.


• Satisfaction guaranteed or your money back.


• Pre- and post-sales technical support.

Complete your order with stainless steel shackles to connect the turnbuckle to the rigging and with high-quality wire rope for enhanced safety.

What is the difference between a bronze and a stainless steel turnbuckle?

Bronze turnbuckles are generally more affordable and offer good corrosion resistance in marine environments. However, AISI 316 stainless steel provides superior corrosion resistance and longer lifespan, making it the ideal choice for boats that frequently sail offshore or in extreme environmental conditions. Stainless steel is also more resistant to tensile and breaking forces compared to bronze.

How do you install a turnbuckle?

Turnbuckle installation depends on the model type. Generally, you need to connect the turnbuckle to the wire or shroud using a terminal (e.g., a swage terminal or a jaw). Ensure all components are properly sized and compatible with each other. Carefully follow the manufacturer's instructions and, if necessary, consult a professional for safe and correct installation.

How do you adjust shroud tension with turnbuckles?

To adjust shroud tension, loosen the turnbuckle's locknuts. Rotate the turnbuckle body to lengthen or shorten the wire's length. Use a rigging tension gauge to measure shroud tension and ensure it is uniform on both sides of the boat. Once the desired tension is achieved, tighten the locknuts to prevent the turnbuckle from loosening.

What are turnbuckle covers and what are they used for?

Turnbuckle covers are fabric or plastic protectors used to cover turnbuckles. They primarily serve to protect turnbuckles from corrosion, UV rays, and the elements, extending their lifespan. Additionally, turnbuckle covers can prevent injuries by preventing people from scratching themselves or getting caught on the turnbuckles.

What are the signs of wear that indicate the need to replace a turnbuckle?

Signs of wear that indicate the need to replace a turnbuckle include: obvious corrosion, cracks or deformations, difficulty rotating the turnbuckle body, damaged or loose threads, and signs of wear on the terminals. If you notice any of these signs, it is important to replace the turnbuckle as soon as possible to ensure the safety of your boat.

What is the difference between a bronze and a stainless steel turnbuckle?

Bronze turnbuckles are generally more affordable and offer good corrosion resistance in marine environments. However, AISI 316 stainless steel provides superior corrosion resistance and longer lifespan, making it the ideal choice for boats that frequently sail offshore or in extreme environmental conditions. Stainless steel is also more resistant to tensile and breaking forces compared to bronze.

How do you install a turnbuckle?

Turnbuckle installation depends on the model type. Generally, you need to connect the turnbuckle to the wire or shroud using a terminal (e.g., a swage terminal or a jaw). Ensure all components are properly sized and compatible with each other. Carefully follow the manufacturer's instructions and, if necessary, consult a professional for safe and correct installation.

How do you adjust shroud tension with turnbuckles?

To adjust shroud tension, loosen the turnbuckle's locknuts. Rotate the turnbuckle body to lengthen or shorten the wire's length. Use a rigging tension gauge to measure shroud tension and ensure it is uniform on both sides of the boat. Once the desired tension is achieved, tighten the locknuts to prevent the turnbuckle from loosening.

What are turnbuckle covers and what are they used for?

Turnbuckle covers are fabric or plastic protectors used to cover turnbuckles. They primarily serve to protect turnbuckles from corrosion, UV rays, and the elements, extending their lifespan. Additionally, turnbuckle covers can prevent injuries by preventing people from scratching themselves or getting caught on the turnbuckles.

What are the signs of wear that indicate the need to replace a turnbuckle?

Signs of wear that indicate the need to replace a turnbuckle include: obvious corrosion, cracks or deformations, difficulty rotating the turnbuckle body, damaged or loose threads, and signs of wear on the terminals. If you notice any of these signs, it is important to replace the turnbuckle as soon as possible to ensure the safety of your boat.