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Hoist Hooks, Rigging Hooks, Sling Hooks & Lifting Hooks
Hooks for Lifting & Rigging
Rigging and lifting hooks, including hoist hooks, sling hooks, and more are essential for many applications, but can differ widely in design, strength, and capacity.
From small swivel eye stainless steel styles to heavy duty sling hooks with a working load limit of over 8,000 lbs., you'll find the right lifting hooks for the job at US Cargo Control.
These hooks come in many variations, but there are general concepts that apply to most of them - we've outlined some of the basics below, and suggest contacting our sales specialists with any other questions you may have.
Lifting Hooks Attachment Options
There are two main attachment styles: eye and clevis. A popular subset of these hooks also include the ability to swivel.
Eye hooks are the most common choice. The circular connection allows for a permanent attachment and greater flexibility compared to a clevis hook. The downside, however, is that if the hook is damaged, the whole sling will have to be retired.
Designed with a clevis and bolt or pin at the base, clevis hooks offer a secure way to fasten the hook to a bracket or chain without being permanent. They do have less range of motion than the eye hooks, but can be easily replaced.
Swivel hooks allow you to rotate the hook to simplify the loading process and prevent your chain or other rigging hardware from becoming twisted. Most are only designed to be rotated before you add the load and cannot be swiveled under load.
Types of Rigging Hooks
After you've chosen the attachment type that will work best for you, you'll want to further narrow down your selection by looking at hook styles. There are a ton of options out there, but we'll touch on some of the most popular.
Grab hooks are designed to "grab" to keep a chain from slipping off the hook. They have a narrow throat that is especially effective at holding chain.
These generally have a wider throat than grab hooks. Slip hooks occasionally include a latch design to keep an attached object in its place.
When used within the working load limit guidelines, a self-locking design ensures the hook will not open when under heavy load.
Sorting hooks are best-suited to applications involving loads like pipes or flat plates due to their deep straight throat.
Important Terminology for Lifting Hooks
There's a lot of jargon associated with rigging hooks - learn more about the most frequently used before you start your search.
This indication refers to the tensile strength of metal. Grades that are approved for overhead lifting include grades 80, 100, and 120. All are made from an alloy steel and provide different levels of strength. For example, a grade 100 hook will provide an approximately 25% higher working load limit than a grade 80 hook.
Learn more about the different chain grades and their working load limits.
Type 316 Stainless Steel
This "marine grade" metal has better corrosion resistance to salts, chemicals and acids, particularly marine environments that involve immersion or spray of sea water.
The different hook finishes offer different benefits.
If the lifting hook has a galvanized finish, the metal has a thin coating of zinc to protect against rust and provide resistance to corrosion.
A powder coat finish provides corrosion-resistance as well and is generally ideal for easy identification of the different grades. Our primary selection of grade 80 hooks are all bright yellow, while our primary selection of grade 120 hooks are bright blue.
Working Load Limit (WLL)
Sometimes also called rated capacity, working load limit is the maximum weight that should be applied to the item when in use.
This number is based on ideal working and environmental conditions, so if you are using the equipment in conditions out of the norm (extremely high or low temperatures, chemical vapor or solution contact, immersion over time in salt water, acids, etc.), this limit may not be correct and special precautions should be taken.
*Working load limit should never be exceeded*
Break strength is the amount of force used when equipment was found to break during testing at the manufacturer. It's important to keep in mind that testing is done in a controlled environment with ideal conditions. Real life applications will involve different factors, forces, and environmental conditions, so it's best practice to follow the WLL guidelines, which is generally 1/3 of the break strength for lifting hooks.
A hoist hook undergoes extensive pressure, so it's important to inspect them carefully and often for damage, cracks, bending and, straightening. Hooks are often stamped with numbers to indicate the load information and rating of the device, making it easy to check the hook for integrity and any damage that might have occurred.
Hooks come in a variety of styles and capacities for a number of uses, and you can count on US Cargo Control to offer just what you need, whether it's a small slip hook or a heavy duty clevis hook.
Don't see the lifting hook you need or aren't sure what might be the best hook for your use? Contact one of our trained sales specialists - they'll be happy to help answer your questions and even help you place an order.