What is a Turnbuckle?

A turnbuckle is a mechanical device that consists of two threaded rods or screws with eyes or hooks or jaws at each end, connected by a central body. This body can be rotated to adjust the tension between the rods, effectively lengthening or shortening the turnbuckle and, in turn, it applies tension to cables that are attached to its ends. Turnbuckles can come in various configurations as we discussed above.

What does a turnbuckle consist of?

A typical turnbuckle comprises the following components:

Threaded Rods: These are the elongated metal rods with threads running along their length. They provide the means for adjusting the length and tension of the turnbuckle.

Eyes, hooks or jaws: Found at each end of the threaded rods, these are attachment points for cables, where they’re held. They come in various configurations such as eye and eye or jaw and eye or hook and jaw and more.

Central Body: This is the central component of the turnbuckle that connects the two threaded rods. It usually consists of a metal body with holes or a mechanism that allows for rotation to adjust the tension.

Types of Turnbuckles:

Eye/Eye Turnbuckle

An eye/eye turnbuckle features an eye at both ends of the turnbuckle body.

Jaw/Eye Turnbuckle

A jaw/eye turnbuckle features a jaw at one end and an eye at the other end of the turnbuckle body.

Jaw/Jaw Turnbuckle

A jaw/jaw turnbuckle features jaws at both ends of the turnbuckle body.

Hook/Eye Turnbuckle

A hook/eye turnbuckle features a hook at one end and an eye at the other end of the turnbuckle body.

Hook/Hook Turnbuckle

A hook/hook turnbuckle features hooks at both ends of the turnbuckle body.

Applications

The primary function of a turnbuckle is to provide adjustable tension between cables. Some common uses of turnbuckles include:

Construction: Turnbuckles are used in construction projects to tension and support cables, ropes, and rods in structures such as bridges, and buildings.

Marine and Boating: In marine environments, turnbuckles are employed to tension rigging cables, lifelines, and sailboat rigging, ensuring the structural integrity and safety of vessels.

Agriculture: Turnbuckles are utilized in agricultural settings to tension wires in fencing, trellises, and vineyard installations, providing support for plants and crops.

Sports and Recreation: Turnbuckles are essential components in sports and recreational installations, providing security for ziplines, playground equipment, and other structures.

How to install a turnbuckle:

Attach the Turnbuckle: Start by attaching one end of the turnbuckle to the fixed point using the eye, hook or a jaw. Secure it in place using bolt or screw.

Thread the Cable: If you're using a wire rope or cable with it, thread one end of the cable through the eye or hook on the turnbuckle and secure it using wire rope clips.

Attach the Second End: Attach the other end of the turnbuckle to the other movable point using the remaining eye, hook or jaw. Ensure that it is securely fastened.

Adjust the Tension: Once the turnbuckle is securely attached at both ends, use the central body of the turnbuckle to adjust the tension. Rotate the body clockwise to increase tension and counterclockwise to decrease tension until the desired level of tension is achieved.

Why they’re important?

Turnbuckles can accommodate a wide range of wire rope or cable diameters, making them suitable for diverse rigging and securing tasks. Constructed from materials such as stainless steel or galvanized steel, turnbuckles offer excellent corrosion resistance and durability, ensuring long-term reliability in harsh environments.

They may seem like humble tools, but their importance and versatility cannot be overstated. From construction to agriculture to marine life, turnbuckles play a vital role in providing good tension and ensuring the stability and safety of structures. As such, the turnbuckle remains an indispensable component in the toolkit of engineers, riggers, builders, and enthusiasts alike, quietly contributing to the success and integrity of countless projects around the world.

We can help you

Here at Laureola Industries, you will be able to find a lot of different types of turnbuckles that are sure to suit your needs in many ways. They’re available in different configurations and sizes, manufactured by some of the best vendors.

We also provide more that just turnbuckles, our inventory includes more rigging hardware including swage sleeves, wire rope clips, thimbles, and more.