What is the difference between a single and a double crane hook?

A single hook has one throat and suits most lifting. A double or ramshorn hook has two opposing throats that share the load, and is used on high-capacity cranes.

How is a crane hook mounted?

Most crane hooks have a threaded shank that passes through a crosshead in the bottom block, retained by a nut and usually seated on a thrust bearing so the hook can rotate.

When should a crane hook be replaced?

Replace a hook that shows increased throat opening, twist, cracks, excessive wear or thread damage beyond the limits of the applicable inspection standard.

What information is needed to replace a crane hook?

Provide the crane capacity and model, the bottom-block reference or drawing, existing hook dimensions including shank thread, and marking or certificate requirements.

Should a crane hook have a safety latch?

A safety latch helps retain slings in the throat and is common on general crane hooks. State whether a latch is required in your enquiry.

Lifting & Material Handling

Crane Hook

Heavy-duty hook formats that act as the load connection within crane and block arrangements.

Key attributes

Forms: Single or double hook
Mounting: Shank with nut or eye
Rating: Confirmed against requirement
Supply basis: Crane reference & drawing
Category: Lifting & Material Handling
Location: Mumbai, India

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Quick answer

What is a crane hook?

A crane hook is the load-bearing hook at the end of a crane or hoist, usually mounted in a bottom block. Single hooks have one throat and suit most general lifting; double (ramshorn) hooks have two opposing throats that share the load on high-capacity cranes.

Also known asCrane load hook · Shank hook · Ramshorn hook · Lifting hook

Key takeaways

Single hooks suit most general crane lifting.
Double (ramshorn) hooks balance load on high-capacity cranes.
Shank thread and nut must match the bottom block.
Rated and inspected to the applicable crane standard.

How Crane Hooks Work in Practice

The crane hook is the final link between the crane and the load. Most are shank hooks: the shank passes through a crosshead in the bottom block and is retained by a nut, letting the hook rotate on a thrust bearing.

Because a crane hook carries the full lifted load, it must match the crane capacity, the bottom block dimensions and the applicable standard. A crane model, block drawing or the existing hook dimensions are the best starting point for a replacement.

Common Crane Hook Forms

Single shank hook

One throat; the most common crane and hoist hook.

Double (ramshorn) hook

Two throats for balanced loading on high-capacity cranes.

Eye hook

Eye attachment instead of shank, for chain or rigging connection.

Hook with latch

Safety latch fitted to retain slings in the throat.

How to Choose the Right Crane Hook

Rated Capacity

The hook must match the crane rating and the applicable standard for its class of service.

Shank & Nut

Shank diameter, thread and length must match the bottom-block crosshead and retaining nut.

Throat Geometry

Throat opening must accept the slings or rigging used, with the latch able to close.

Inspection Regime

Hooks are inspected for throat opening, wear, cracks and deformation per the applicable standard.

Safety note

Lifting and load-bearing products must be selected against a confirmed working load limit, the applicable standard and the actual rigging arrangement. Never use a part beyond its marked or documented rating, and inspect before every use.

Single Hook vs Double (Ramshorn) Hook

The form depends on capacity and how the load is rigged.

Single Hook vs Double (Ramshorn) Hook
Criteria	Single hook	Double hook
Throats	One	Two, opposing
Typical capacity	General to medium-capacity cranes	High-capacity cranes
Load distribution	Load in one throat	Load shared between both throats
Rigging	Simple sling attachment	Balanced multi-sling rigging

Crane Hook Specifications

Use this framework to prepare a complete enquiry. Values are confirmed against your drawing, application and required quantity.

Crane Hook specification framework
Parameter	Requirement basis
Product type	Single or double crane hook
Rated capacity	State the crane or hook capacity
Mounting	Shank with nut, or eye
Shank diameter & thread	To suit crosshead and nut
Throat opening	As required
Latch	With or without safety latch
Crane / block reference	Model, drawing or existing hook dimensions
Marking & certificates	State marking and test-document needs

What to include in your enquiry

Crane capacity and model
Single or double hook form
Shank diameter, thread and length
Marking, documents and quantity

Where Crane Hooks Are Used

Typical application areas. The intended task should always be disclosed so the product form and specification can be evaluated correctly.

EOT & gantry cranes

Main and auxiliary hoist hooks

Electric & manual hoists

Load hook in hoist bottom blocks

Jib & wall cranes

Load connection for workshop cranes

Replacement & overhaul

Hooks matched to existing blocks

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Lifting & Material HandlingCrane Hook

Product features

Product type: Single or double crane hook
Rated capacity: State the crane or hook capacity
Mounting: Shank with nut, or eye
Shank diameter & thread: To suit crosshead and nut
Throat opening: As required
Latch: With or without safety latch

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Crane Hook

What is a crane hook?

Key takeaways

How Crane Hooks Work in Practice

Common Crane Hook Forms

Single shank hook

Double (ramshorn) hook

Eye hook

Hook with latch

How to Choose the Right Crane Hook

Rated Capacity

Shank & Nut

Throat Geometry

Inspection Regime

Single Hook vs Double (Ramshorn) Hook

Crane Hook Specifications

What to include in your enquiry

Where Crane Hooks Are Used

EOT & gantry cranes

Electric & manual hoists

Jib & wall cranes

Replacement & overhaul

Crane Hook FAQs

What is a crane hook?

What is the difference between a single and a double crane hook?

How is a crane hook mounted?

When should a crane hook be replaced?

What information is needed to replace a crane hook?

Should a crane hook have a safety latch?

Crane Hook Reviews

No reviews yet

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