A sailboat turnbuckle is an essential component in the rigging system, used to adjust and maintain the tension of standing rigging such as shrouds and stays. Turnbuckles consist of a threaded body with two end fittings—typically a jaw, eye, or stud—that connect to the rigging lines.
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1-2 weeks delivery time The Blue Wave Turnbuckle Bodies feature a chrome-plated brass (bronze) body with AISI 316 stainless steel compatibility for Blue Wave rigging terminals. Designed as the central body of a modular turnbuckle system, they are available for 1/4" to 3/4" UNF threads, suitable for 3-10 mm wire, and support breaking loads from 1,300 kg to 13,000 kg.
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$ 58.56
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1-2 weeks delivery time The Blue Wave Left-Hand Jointed Forks are precision-machined AISI 316 stainless steel terminals designed for Blue Wave modular turnbuckle systems. Featuring left-hand UNF threads from 1/4" to 3/4", they are suitable for 3-10 mm wire applications with breaking loads from 1,300 kg to 13,000 kg.
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$ 39.89
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1-2 weeks delivery time The Blue Wave Right-Hand Press-Fitting Terminals are manufactured from AISI 316 stainless steel and designed for Blue Wave modular turnbuckle systems. Featuring right-hand UNF threads from 1/4" to 3/4", they are suitable for 3-12 mm wire rope with breaking loads from 1,300 kg to 13,000 kg. These terminals are intended for professional swaging onto wire rope to create a secure standing rigging connection.
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$ 20.57
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1-2 weeks delivery time The Blue Wave Right-Hand Fixed Forks are precision-machined AISI 316 stainless steel terminals designed for Blue Wave modular turnbuckle systems. Featuring right-hand UNF threads from 1/4" to 3/4", they are suitable for 3-10 mm wire applications with breaking loads from 1,300 kg to 13,000 kg. The fixed fork design provides a secure clevis connection for standing rigging assemblies.
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$ 25.60
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1-2 weeks delivery time The Osculati Stainless Steel Turnbuckle Body is manufactured from marine-grade AISI 316 stainless steel and serves as the central body of the Osculati modular turnbuckle system. Available with UNF threads from 1/4" to 5/8", it is designed for 3-8 mm wire rope applications. The body is combined with a left-hand jointed fork and either a right-hand press-fitting terminal or right-hand fixed fork to create a complete rigging screw assembly.
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$ 7.53
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1-2 weeks delivery time The Osculati Stainless Steel Jointed Fork Terminal is a marine-grade AISI 316 stainless steel left-hand threaded terminal designed for the Osculati modular turnbuckle system. Available with UNF threads from 1/4" to 5/8", it is suitable for 3-8 mm wire rope applications and connects to the Osculati stainless steel turnbuckle body to create a complete standing rigging assembly.
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$ 7.88
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1-2 weeks delivery time The Osculati Stainless Steel Press-Fitting Terminal is a marine-grade AISI 316 stainless steel right-hand threaded terminal designed for use with the Osculati modular turnbuckle system. Available with UNF threads from 1/4" to 5/8", it fits 3-10 mm wire rope and is intended for press-fitting installation. Combined with the Osculati turnbuckle body and left-hand jointed fork, it forms a complete adjustable standing rigging assembly.
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$ 3.32
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1-2 weeks delivery time The Osculati Stainless Steel Fixed Fork Terminal is manufactured from marine-grade AISI 316 stainless steel and is designed as the right-hand threaded fork for the Osculati modular turnbuckle system. Available with UNF threads from 1/4" to 5/8", it fits 3-8 mm wire rope applications and combines with the Osculati turnbuckle body and left-hand jointed fork to create a complete adjustable standing rigging assembly.
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$ 4.13
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1-2 weeks delivery time The Osculati Turned Rigging Screw is manufactured from mirror-polished AISI 316 stainless steel and features fork-to-fork ends with precision-machined threads for smooth and accurate tension adjustment. Available in M4 to M20 thread sizes, with working loads from 410 to 7,940 kg, these turnbuckles are suitable for standing rigging, lifelines, guardrails, and other demanding marine tensioning applications.
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$ 17.33
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1-2 weeks delivery time The Osculati Turned Rigging Screw with Press-Fitting Terminal is manufactured from mirror-polished AISI 316 stainless steel and combines a fork end with a right-hand press-fitting terminal for stainless steel wire rope. Featuring precision-machined threads with a long adjustment range, it is available for 3-6 mm wire rope, with M6 to M12 threads and overall lengths from 250 to 410 mm.
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$ 19.01
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1-2 weeks delivery time The Osculati Rigging Screw with Built-In Allen Spanner Terminal is manufactured from marine-grade AISI 316 stainless steel and is designed for lifeline end fittings. Suitable for 5-6 mm bare stainless steel wire rope or 6 mm coated cable, it features an integrated Allen spanner terminal for compact installation and precise tension adjustment.
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$ 61.70
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1-2 weeks delivery time The Osculati Turned Rigging Screws with Built-In Terminal are manufactured from marine-grade AISI 316 stainless steel and are designed specifically for Parafil cables. Available for 7 mm and 9 mm cable diameters, these rigging screws provide reliable tension adjustment and outstanding corrosion resistance for demanding marine applications.
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$ 52.92
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1-2 weeks delivery time The Osculati Self-Locking Rigging Screws with Terminal are manufactured from marine-grade AISI 316 stainless steel and feature an automatic self-locking cable terminal. The internal cone securely locks the wire rope during insertion, eliminating the need for additional fastening components. Available for 3-6 mm wire rope with M6 to M12 threads and working loads up to 571 kg.
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$ 35.13
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1-2 weeks delivery time The Osculati Rigging Screws with Two Fixed Jaws are manufactured from marine-grade AISI 316 stainless steel for reliable tensioning of standing rigging, lifelines, and marine cable systems. Available with M5 to M12 threads, overall lengths from 120 to 300 mm, and working loads from 400 to 2400 kg, these turnbuckles provide excellent corrosion resistance and smooth adjustment in demanding marine environments.
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$ 9.90
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1-2 weeks delivery time The Osculati Eye-to-Eye Rigging Screws are manufactured from marine-grade AISI 316 stainless steel and are designed for tensioning lifelines, standing rigging, and stainless steel cable systems. Available with M4 to M10 threads, overall lengths from 100 to 240 mm, and working loads from 87 to 880 kg, these turnbuckles provide smooth adjustment and excellent corrosion resistance for marine applications.
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$ 4.28
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1-2 weeks delivery time The Osculati Turnbuckles with Two Articulated Jaws are manufactured from marine-grade AISI 316 stainless steel for reliable adjustment of standing rigging, lifelines, and marine cable systems. Featuring articulated jaw terminals at both ends, they allow greater flexibility during installation. Available with M6 to M12 threads, overall lengths from 160 to 280 mm, and working loads from 600 to 2400 kg.
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$ 15.32
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1-2 weeks delivery time The Osculati Rigging Screws with Two Fixed Jaws are manufactured from marine-grade AISI 316 stainless steel for precise tensioning of standing rigging, lifelines, and marine cable systems. Featuring fixed jaw terminals on both ends, they are available with M4 to M16 threads, overall lengths from 160 to 450 mm, and breaking loads from 346.5 to 9075 kgf, offering exceptional strength and corrosion resistance for demanding marine applications.
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$ 8.48
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1-2 weeks delivery time The Osculati Rigging Screws with Fixed Jaw and Press-Fitting Terminal are manufactured from marine-grade AISI 316 stainless steel and are designed for precise tensioning of stainless steel wire rope. Featuring a fixed jaw on one end and a press-fitting terminal on the other, they are available for 3-6 mm wire rope, with M6 to M12 threads and working loads from 250 to 1250 kg.
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$ 9.82
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1-2 weeks delivery time The Osculati Rigging Screws with Articulated Jaw and Press-Fitting Terminal are manufactured from marine-grade AISI 316 stainless steel for precise adjustment of stainless steel wire rope systems. Featuring an articulated jaw terminal on one end and a press-fitting terminal on the other, they are available for 3-6 mm wire rope with working loads from 238 to 925 kg, providing secure installation and excellent corrosion resistance in marine environments.
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$ 12.69
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1-2 weeks delivery time The Osculati Rigging Screw Protectors are manufactured from UV-resistant white polyester and are designed to cover exposed rigging screws, protecting both sails and crew from accidental contact. Each protector features a hook-and-loop (Velcro®-style) fastener for quick installation and removal. Available in Ø30, 40, and 50 mm diameters with lengths from 400 to 600 mm.
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$ 21.34
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What are the key features of a sailboat turnbuckle, and how does it function on a boat?
A sailboat turnbuckle is a key component of the sailboat rigging system, designed to adjust the tension in the wires or ropes that support the mast. Made from high-quality materials like stainless steel or bronze, turnbuckles are adjustable to meet the specific tension requirements of the rigging. The forged turnbuckle ensures durability under heavy loads, providing secure and precise control over the boat's mast and sails during sailing. This essential part can be found in various grades and styles, including rigging turnbuckles and stainless steel jaw options, available at our store.
How can a sailor determine the appropriate size of a turnbuckle for their sailboat rigging?
To determine the appropriate size of a turnbuckle for sailboat rigging, a sailor must first assess the diameter and type of wire or rope used in the rigging system. It is important to select a turnbuckle that matches the load capacity required, ensuring it can withstand the stresses of heavy-duty sailing.