The Complete Guide You Should Know About Turnbuckle Hardware

In this guide, we’ll look at the different types of turnbuckles at the end fittings, installation, and uses.

What is a turnbuckle?

A turnbuckle also is known as rigging screw, tensioner, straining screw, barrel strainer, or adjuster, is a device for adding or releasing the tension or length of ropes, cables, tie rods, and other tensioning systems. They are used for rigging or tensioning wires, ropes, rods, etc., typically within industries such as oil and gas, construction, shipping, mining, and fishing. You can easily twist the turnbuckle body to expand or contract the length, without rotating the end fittings on both sides.

US Type Drop Forged Turnbuckles Hook and Eye applications

Turnbuckle material

The most common turnbuckle materials are carbon steel and stainless steel. We usually add a zinc layer on the carbon steel galvanized turnbuckles with protection against rust and corrosion, while stainless steel turnbuckles can be used in high chloride or high moisture environments, as they offer a higher level of corrosion protection. If corrosion is a concern, stainless steel turnbuckle is your best choice.

Turnbuckle end fittings

Rigging turnbuckles are available in many different types, sizes, but basically there are three primary turnbuckle accessories: a turnbuckle body, a right-hand threaded end fitting, and a left-hand threaded end fitting.

There are two main types of turnbuckle body, closed body turnbuckle, and open body turnbuckle, please refer to the following items.

Turnbuckles End Fittings

The turnbuckle end fittings conjunction with other anchor points to adjust the tension of the cable or rope by turning the turnbuckle body.
basically four main types of end fittings including:

  • Hook end – are used for temporary connections and are much easier to install and attached or detached from other rigging components than jaw end turnbuckle and eye to eye turnbuckle. However, it is far less practical due to the lack of a safety latch, which may unexpectedly release from attached rigging components, cause the hook to dislodge.
  • Jaw end – are composed of a jaw, bolt, and nut, but depending on size, some jaw turnbuckles only come with a cotter and a pin. They can attach the wire rope sling straight onto the jaw end and pin to the lifting eye bolts and lugs, which cannot be opened.
  • Eye end – are intended for straight-line pulls only or in-line applications not for lifting purposes. They have no moving and opening parts, designed for a shackle or quick link to go through on each eye end, then attached a wire rope sling or other approved rigging components.

The turnbuckle ends can be combined according to different needs that whether the solution is permanent or temporary, so there are many different types of turnbuckles.

Different types of turnbuckles

We carry a full line of turnbuckles from the small turnbuckle to the large turnbuckle. The most common turnbuckle types are:

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