Cranes, hoists, and slings provide the force needed to lift and move heavy loads, but rigging hardware creates the connections that hold the lifting assembly together. Understanding the common types of rigging hardware and the role each component performs can help project teams identify suitable connection points, compare available configurations, and communicate more clearly when sourcing lifting equipment.
Shackles, hooks, hoist rings, blocks, wire rope fittings, sockets, swivels, and specialty offshore components all perform different functions. The appropriate hardware depends on the load, lifting method, connection points, operating environment, and compatibility of the complete rigging assembly.
This guide explains the common rigging hardware used for offshore oil and gas, subsea construction, marine, salvage, petrochemical, civil, construction, and heavy lifting applications.
What Is Considered Rigging Hardware?
Rigging hardware includes the heavy-duty components used to connect, secure, stabilize, lift, hoist, pull, or position a load.
Common examples include:
- Shackles
- Hooks
- Master links and connecting links
- Hoist rings
- Eye bolts
- Blocks and sheaves
- Wire rope fittings
- Sockets
- Swivels
- Turnbuckles
- Chain attachments
- Specialty offshore and subsea components
Slings, wire rope, chains, and hoists are generally treated as broader rigging or lifting equipment. They work together with hardware components to create a complete lifting assembly.
Dynamic Lifting Solutions supplies both standard rigging hardware and specialty offshore or subsea components, including shackles, hooks, hoists, slings, chain products, and sea-fastening equipment.
Why Rigging Hardware Matters to a Lifting Assembly
Rigging hardware forms the connection between the load, sling, hoist, crane, or lifting device. Every component must be appropriately rated, compatible with the other parts of the assembly, and suitable for the environment in which it will be used.
Most lifting assemblies depend on several pieces of hardware and equipment working together. A typical configuration may include a crane hook, shackle, sling, master link, and attachment point.
Evaluating the complete assembly is important because the rated capacity of one component does not determine whether the entire configuration is suitable for a lift. Project teams may need to consider:
- Load weight and center of gravity
- Working Load Limit
- Load direction
- Sling angles
- Connection geometry
- Attachment-point dimensions
- Operating environment
- Manufacturer requirements
- Compatibility between components
Selecting each component as part of the overall lifting system helps avoid mismatched connections and supports more efficient lift planning.
Common Types of Rigging Hardware
1. Shackles
Shackles create secure connections between slings, hooks, lifting devices, and load attachment points. They are among the most widely used pieces of rigging hardware because they are available in different body and pin configurations.
Common shackle body types include:
- Bow or anchor shackles: Their rounded shape provides additional room for multi-leg sling connections.
- D shackles: Their narrower profile is commonly associated with in-line loading configurations.
Shackle pin options include:
- Screw pin shackles for temporary lifting configurations.
- Bolt-type shackles for longer-term installations or applications exposed to vibration.
- ROV shackles for offshore and subsea lifting operations performed by remotely operated vehicles.
If you’re comparing options for subsea projects, understanding the different ROV shackles designs can help determine which configuration is best suited to the application.
2. Hooks
Hooks provide a connection between a lifting assembly and the load or attachment point. Different designs are available based on the type of sling, chain, equipment, or lifting operation.
- Eye hooks: Connect slings through the hook eye.
- Clevis hooks: Attach directly to compatible chain.
- Self-locking hooks: Lock automatically under load.
- Grab hooks: Shorten or adjust chain assemblies.
- Swivel hooks: Allow controlled hook rotation.
- ROV hooks: Designed for subsea lifting and recovery.
The hook opening, attachment method, latch design, load direction, and compatibility with the sling or chain should all be considered during selection.
For underwater lifting operations, ROV hooks are designed for use during installation, recovery, and subsea construction projects where remotely operated vehicles are part of the lifting operation.
3. Hoist Rings and Eye Bolts
Hoist rings and eye bolts create lifting points on machinery, equipment, fabricated structures, and other loads.
Hoist Rings
Hoist rings can accommodate movement or changes in load direction, depending on their design. Swivel hoist rings are commonly used where the lifting point may need to rotate or align with the direction of pull.
Eye Bolts
Eye bolts provide a fixed attachment point. Different configurations may be intended for in-line loading, angular loading, or specific mounting conditions.
4. Wire Rope Fittings
Wire rope fittings help terminate, connect, protect, or secure wire rope assemblies.
Common fittings include:
- Clips
- Thimbles
- Sleeves
- Ferrules
- Wedges
- End stops
- Wire rope sockets
A thimble helps protect the rope eye from wear and deformation at the connection point. Sleeves and ferrules may be used to form secured terminations. Wire rope clips can be used in specific assemblies when installed according to the applicable instructions and configuration.
The fitting must match the rope diameter, construction, termination method, and intended use.
5. Offshore and Subsea Rigging Hardware
Offshore and subsea lifting operations often require specialty hardware designed for marine exposure, underwater handling, remote operation, and project-specific connection requirements.
Depending on the application, an offshore or subsea rigging assembly may include:
- ROV shackles
- ROV hooks
- ROV hoists
- Specialty lifting links
- Subsea swivels
- Offshore lifting frames
- Corrosion-resistant components
- Wire rope slings
- Chain assemblies
- Sea-fastening equipment
Hardware selection may need to account for operating depth, marine exposure, ROV interface, handling method, subsea visibility, documentation requirements, lift-plan specifications, and compatibility with the rest of the assembly.
Dynamic Lifting Solutions supports specialty offshore and subsea applications with ROV-compatible shackles, hooks, hoists, and related rigging products.
Related Rigging Equipment Used With Hardware
Rigging hardware is rarely used by itself. It normally works with slings, hoists, chain, wire rope, and other lifting equipment to form a complete system.
Wire Rope Slings
Wire rope slings are commonly used for offshore, marine, salvage, crane, petrochemical, construction, and heavy lifting applications.
They may be connected to:
- Shackles
- Hooks
- Master links
- Thimbles
- Sockets
- Lifting beams
- Load attachment points
The sling configuration, rope construction, length, diameter, termination, and hardware must be suited to the lift.
Chain and Chain Slings
Chain sling assemblies combine alloy chain with hardware such as master links, connecting links, shortening devices, and hooks.
They are often used where durability, adjustability, or resistance to certain jobsite conditions is required.
Each component should be compatible with the chain’s:
- Grade
- Diameter
- Rated capacity
- Assembly configuration
- Manufacturer
Chain Hoists and Lever Hoists
Chain hoists and lever hoists are used to lift, position, tension, or pull equipment during installation, maintenance, offshore, marine, construction, and industrial work.
Common applications include:
- Positioning machinery
- Aligning fabricated components
- Pulling equipment into place
- Supporting maintenance work
- Tensioning a load
- Handling equipment in restricted spaces
The appropriate hoist depends on the load, required lift or pull distance, operating angle, available headroom, and workspace conditions.
Sea Fastening, Tiedowns, and Lashing Equipment
Equipment often must be transported before lifting or installation begins. Sea-fastening, tie-down, and lashing systems help secure cargo during transportation between fabrication yards, ports, vessels, offshore installations, and project sites.
These systems may incorporate:
- Chain
- Wire rope
- Turnbuckles
- Tensioning devices
- Shackles
- Lashing points
- Welded support structures
- Project-specific restraints
The transportation method, vessel movement, cargo weight, center of gravity, and securing plan all influence equipment selection.
How Different Rigging Types Influence Hardware Selection
Different rigging types require different combinations of hardware and equipment.
- Wire rope sling assemblies: Shackles, hooks, master links, thimbles, sleeves, and sockets.
- Chain sling assemblies: Master links, connecting links, chain fittings, and hooks.
- Offshore and subsea lifting: ROV shackles, ROV hooks, ROV hoists, swivels, and specialty links.
- Marine transportation: Turnbuckles, shackles, chain, tiedowns, and sea-fastening equipment.
- Hoisting applications: Chain hoists, lever hoists, hooks, shackles, and lifting points.
- Pulling and positioning: Hoists, blocks, sheaves, swivels, and connection hardware.
The type of lift does not determine the correct hardware by itself. The project team must also evaluate the load, configuration, connection geometry, environment, and complete lifting plan.
What to Consider When Selecting Rigging Hardware
Selecting rigging hardware involves more than matching a component to the weight of the load.
Important considerations include:
Load Weight and Center of Gravity
The total load weight and center of gravity influence how the load will behave during lifting. An uneven or offset center of gravity can affect sling loading and connection-point forces.
Working Load Limit
Every component must have a Working Load Limit appropriate for the intended configuration. The lowest-rated component may limit the capacity of the complete assembly.
Load Direction
Many components are designed primarily for in-line loading. Side loading, angular loading, or multi-directional forces may reduce allowable capacity or require a different product.
Connection Dimensions
The shackle body, hook opening, master link, lifting point, or socket must physically fit the connecting component without binding, crowding, or applying force in an unintended direction.
Operating Environment
Environmental factors may include:
- Marine exposure
- Saltwater
- Corrosive conditions
- Extreme temperatures
- Subsea operation
- Abrasive materials
- Restricted access
- ROV handling
Manufacturer and Part Compatibility
Hardware from different manufacturers or product systems should not be assumed interchangeable. Dimensions, grades, capacities, and installation requirements may differ.
Documentation Requirements
Offshore, subsea, marine, petrochemical, civil, and critical lifting projects may require specific documentation, certifications, identification, testing records, or traceability.
Complete Assembly Compatibility
Each component should work with the sling, chain, rope, hoist, lifting device, and connection point as a complete system.
Dynamic Lifting Solutions can assist customers who already have a manufacturer or part number, as well as those who need help reviewing load requirements, connection points, environmental conditions, and compatible product options.
Partner With a Team That Understands Complex Lifting Projects
Selecting the right rigging hardware is only one part of a successful lifting operation. Whether you’re planning a new project, replacing existing components, or reviewing a lift plan, having a knowledgeable partner can help simplify equipment selection and keep your project moving.
Dynamic Lifting Solutions provides specialized lifting, testing, and custom fabrication services for construction, offshore, petrochemical, and civil projects across the United States. With years of experience supporting complex and critical lifting operations, we deliver innovative solutions backed by expert engineering, responsive service, and a full range of on-site and in-house testing capabilities.
If you already have a part number or need assistance selecting compatible rigging hardware for your application, contact Dynamic Lifting Solutions to speak with a member of our team.
Frequently Asked Questions
What are the most common types of rigging hardware?
Common types of rigging hardware include shackles, hooks, master links, hoist rings, eye bolts, blocks, sheaves, sockets, swivels, turnbuckles, wire rope fittings, and chain attachments. Offshore or subsea operations may also require ROV shackles, ROV hooks, specialty swivels, and other remotely operated components.
Are slings considered rigging hardware?
Slings are generally categorized as rigging equipment rather than hardware. However, wire rope, chain, and synthetic slings work with hardware such as shackles, hooks, master links, sockets, and fittings to create complete lifting assemblies.
What is the difference between a shackle and a hook?
A shackle creates a closed connection using a removable pin, while a hook provides an open connection point that may include a latch or locking mechanism. The appropriate option depends on the connection geometry, load direction, operating conditions, and lift plan.
What information is needed when sourcing rigging hardware?
Useful information may include the required Working Load Limit, load direction, connection dimensions, sling or chain size, operating environment, manufacturer preference, documentation requirements, and any available model or part number.
Can standard rigging hardware be used for subsea lifting?
Not every standard component is appropriate for subsea work. A subsea application may require hardware designed for marine exposure, remote handling, ROV operation, corrosion resistance, project documentation, and specific connection requirements.
How do I know whether rigging components are compatible?
Compatibility depends on more than rated capacity. The project team should also review dimensions, load direction, attachment method, component grade, operating environment, manufacturer instructions, and the configuration of the complete lifting assembly.
How often should rigging hardware be inspected?
Rigging hardware should be visually checked before use and undergo additional inspections at the intervals required by the manufacturer, employer, applicable standards, and project procedures. Components showing damage, distortion, corrosion, excessive wear, or missing identification should be removed from service for evaluation.
Can Dynamic Lifting Solutions help source specialty offshore hardware?
Yes. Dynamic Lifting Solutions helps customers source standard rigging hardware and specialty offshore or subsea components, including ROV-compatible shackles, hooks, hoists, and related lifting products.
