What is a Ramshorn Hook?

What is a Ramshorn Hook?

ramshorn hooks
Photo courtesy of @cranenation via Instagram

A Ramshorn hook is a shank hook with two throat openings, sometimes called sister hooks, double hooks or twin hooks. They are used in applications with shipyard cranes and container cranes. Ramshorn hooks can be used on any type of crane block.

Why Use a Ramshorn (Double) Hook?

Ramshorn hooks offer many benefits to the user. Not only do they allow for better rigging options due to the wider profile and double throat combination, they also provide better load distribution when using multiple slings in a rigging application.

Featuring an additional throat opening, Ramshorn hooks prevent slings from bunching up as they more frequently do with single hooks. This second throat also helps to prevent sling damage when under load. Featuring a wider hook profile, as compared to single hooks, Ramshorn hooks allow for more stable load control when properly rigged. The wider profile also provides better load distribution and allows for more controlled lifts.

Compared to single hooks, Ramshorn hooks commonly have a smaller frame with a much higher capacity, helping to reduce the weight of the overall crane lifting gear.

Not all Ramshorn Hooks Are Created Equal.

Ramshorn Hooks

There are two types of Ramshorn hooks: the Ramshorn Form A hook, which has a solid lower hook design, and the Ramshorn Form B hook. Columbus McKinnon offers the Form B version because of its versatility. This hook provides all the advantages as mentioned above with the addition of a hole in the lower hook to attach rigging hardware. This feature gives the user the option to change their double hook into a sling hook if so desired.

All Ramshorn hooks are manufactured to DIN 15402 standards. Just like our single hooks, these double hooks can be furnished in various configurations including unmachined, machined, and machined with nuts for full suspensions.

In 2015, Columbus McKinnon acquired Stahlhammer Bommern GmbH (STB), the leading manufacturer of heavy-load single and ramshorn hooks in Europe. Now available in North America, our offering includes a comprehensive line of CM Shank Hooks in both single- and double-hook configurations.

Download our CM Shank Hooks brochure.

Tim Lewis

Tim Lewis is a Business Development Manager at Columbus McKinnon Corporation.

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8 Replies to “What is a Ramshorn Hook?”

  1. Hi Fran,
    All CM crane hooks are made via the forging process.
    We can forge hooks in a variety of material including carbon, alloy, stainless, or bronze material.

  2. Would you consider a ramshorn hook to be an equalising component? EG, like a triangle or sheave.

  3. Hi Joseph,
    Both sides of the hook must be used and loaded equally. Care must be taken not to bunch slings in the hook throat opening. The included angle of loading must not exceed 45 degrees. Hooks must never be tip loaded. If a single point pick is needed, you would need the style of Ramshorn hook that has the hole in the center of the horns to attach a shackle.


  4. Can’t rigging be wrapped around the palm of the hook like in a four-point pick….. Around the palm of the hook and then two slings are on the prongs… is that legal

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