Grade 80 Hooks
G80 Clevis Sling Hook With Latch A339
A drop-forged alloy steel clevis sling hook with a safety latch, designed for general-purpose rigging. It connects directly to Grade 80 chain using a load and retaining pin. Available in sizes from 6-8 to 32-8, with working load limits from 1.12T to 31.5T. The body is heat-treated and powder coated for corrosion resistance. Standard 4:1 design factor applies. Used in lifting, slinging, and securing loads across industrial and marine environments.
- Size
- From 6-8 to 32-8 Processing: Drop Forged / Quenched and Tempered
- Material
- Alloy steel
- Finish
- Powder Coated,Painted
- Packing
- Cartons then pack on pallets
- Catalogue Family
- Grade 80 Hooks
- Certificates
- EN 10204 3.1 material test certificate on request
CAD files are supplied on request via WhatsApp or email rather than published for open download.
Key Benefits
What G80 Clevis Sling Hook with Latch A339 Gives You
- Drop-forged alloy steel body with quench and temper heat treatment provides high impact strength and fatigue resistance
- Safety latch prevents accidental disengagement of the load or chain during lifting operations
- Clevis design allows direct connection to Grade 80 chain without additional fittings
- Powder coated finish resists rust and abrasion in harsh industrial and marine environments
- Standard 4:1 design factor ensures consistent safety margins across all sizes
- Wide range of sizes from 6-8 to 32-8 covers most common lifting applications
- Load and retaining pin supplied with each hook for immediate use in the field
Application Scenarios
Where G80 Clevis Sling Hook with Latch A339 Is Used
- Lifting and securing heavy steel beams in construction and infrastructure projects
- Connecting Grade 80 chain to slings or rigging systems in crane operations
- Marine cargo handling where corrosion resistance and safety are critical
- Industrial maintenance and equipment repositioning with chain-based lifting systems
- Offshore rigging setups requiring reliable, reusable hooks with positive latch action
- Logistics and transport operations using chain slings for securing heavy loads on trailers
Who It Is For
Buyers This Product Is Built For
- Rigging contractors sourcing reliable hooks for on-site lifting operations
- Industrial maintenance teams specifying hooks for equipment handling
- Marine and offshore operators requiring corrosion-resistant rigging hardware
- Truck and trailer fleets using chain slings for load securing
- Manufacturers building lifting systems that require certified hooks with traceability
- Procurement engineers sourcing Grade 80 hooks with consistent safety and finish
Problems It Solves
Problems This Product Removes
- Accidental hook disengagement during lifting due to lack of a positive latch mechanism
- Using mismatched or non-rated hooks that compromise the chain sling system integrity
- Lack of traceability and material certification for safety-critical rigging components
- Corrosion and surface degradation in outdoor or marine environments due to poor finish
- Need to source hooks and chain connectors from separate suppliers, increasing procurement complexity
- Inconsistent safety factors across hook sizes leading to overloading risks
Technical Features
Technical Features
- Drop-forged alloy steel body with quench and temper heat treatment
- Safety latch prevents accidental disengagement of chain or load
- Clevis end designed for direct connection to Grade 80 chain
- Load and retaining pin included with each hook
- Standard 4:1 design factor with minimum breaking load four times the safe working load
- Powder coated surface finish for corrosion resistance
- Working load limit and grade stamped on the hook body for field traceability
Specifications
G80 Clevis Sling Hook with Latch A339 Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Capacity Range | 1.12T to 31.5T safe working load |
|---|---|
| Material | Alloy steel drop forged and quenched tempered |
| Design Factor | 4:1 minimum breaking load to safe working load |
| Surface Finish | Powder coated |
| Grade | G80 |
| Pin Type | Load and retaining pin included |
| Clevis Connection | Direct fit to Grade 80 chain |
| 6-8 Dimensions | A 8 B 32 E 26 D 35 H 23 L 76 mm weight 0.32 kg |
| 10-8 Dimensions | A 13 B 49 E 39 D 46 H 35 L 104 mm weight 0.95 kg |
| 16-8 Dimensions | A 21.5 B 70.5 E 55 D 60 H 54 L 150 mm weight 3.4 kg |
| 22-8 Dimensions | A 27 B 91 E 72 D 101 H 62 L 213 mm weight 10.4 kg |
| 32-8 Dimensions | A 35 B 150 E 106 D 140 H 88 L 317 mm weight 27 kg |
Full size table on request. The catalogue publishes a full dimension and capacity table for this item. Ask on WhatsApp or by email and we will send it as a PDF.
Materials
Materials And Finishes
- Alloy steel body drop forged and quenched tempered for high strength and toughness
- Powder coat finish applied over the forged body to resist rust and abrasion
- Load and retaining pin made from heat-treated steel to match the hook's strength
- Stainless steel components used where applicable to prevent seizing in corrosive environments
Manufacturing Process
How This Product Is Made
1Drop forging of the hook and clevis blanks
2Quench and temper heat treatment to achieve G80 strength grade
3Machining of the clevis bore and latch mechanism
4Assembly of the load and retaining pin
5Powder coating application and curing
6Stamping of working load limit and grade on the body
7Proof load testing and dimensional inspection
8Packing in cartons then palletized for export
Quality Control
Quality Control On Every Batch
- Proof load test conducted on production batches before release
- Dimensional tolerance checked against published size table
- Breaking strength validated to confirm 4:1 design factor
- Latch function tested for smooth operation and positive retention
- Material Test Certificate to EN 10204 3.1 issued with the order on request
- Third-party inspection accepted at the Qingdao warehouse before shipment
Customisation
Customisation Options
- Custom tonnage stamping on the hook body
- Private label and OEM marking available
- Finish options: powder coated, zinc plated, or electrophoretic black
- Custom sizes and configurations built to a supplied drawing
- Packing carton and pallet configuration tailored to warehouse or retail needs
Compare
How It Compares With The Alternatives
An honest read on where this pattern wins and where another one would serve you better.
| Alternative | Honest Trade Off |
|---|---|
| Standard clevis hook without latch | The latch prevents accidental disengagement but adds weight and requires periodic inspection for wear |
| Screw pin hook | The pin with nut and cotter is more secure under vibration than a screw pin, which can loosen during dynamic lifting |
| Eye hook | The clevis design allows direct chain connection, while an eye hook requires a separate link or shackle |
| Grade 70 hook | G80 has higher tensile strength and breaking load, suitable for heavier or more demanding applications |
Use Guide
How To Use And Inspect G80 Clevis Sling Hook with Latch A339
- Match the stamped working load limit to the actual load, not the lifting equipment rating
- Ensure the safety latch is fully closed and latched before applying load
- Inspect the latch mechanism and pin for wear, deformation, or corrosion before each use
- Do not exceed the 4:1 design factor; use only within the rated safe working load
- Avoid side loading the clevis; keep the pull aligned with the hook axis
- Retire the hook if the body shows deformation, the latch fails to hold, or the marking is unreadable
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Answers
G80 Clevis Sling Hook with Latch A339 FAQ
What is the safety factor for this hook?
A standard 4:1 design factor applies, meaning the minimum breaking load is four times the stated safe working load.
Can I use this hook with Grade 80 chain?
Yes. The clevis is designed for direct connection to Grade 80 chain using the supplied load and retaining pin.
Is the powder coating durable in harsh environments?
Yes. The powder coat finish resists rust and abrasion in industrial and marine environments, but inspection is recommended after exposure to saltwater or chemicals.
What certificates are provided with the order?
A Material Test Certificate to EN 10204 3.1 is supplied on request. Every batch is proof load tested and dimensionally checked.
Can I get custom tonnage marking or private label?
Yes. Custom tonnage stamping, private label, and OEM marking are standard options. Finish and packing can also be customized.
How are the hooks packed for export?
Packed in cartons then palletized. We can configure carton count and pallet pattern to match your warehouse or retail requirements.
What sizes are available?
Sizes range from 6-8 to 32-8. The full size table includes dimensions A, B, E, D, H, L and weight per piece for each capacity.
Need A Quote On G80 Clevis Sling Hook with Latch A339
Send the sizes, the finish and the quantity on WhatsApp or by email. You get a priced reply within 24 hours and a straight answer on stock.
We reply within 24 hours on WhatsApp or by email. Send a drawing, a photo or a bill of materials and we will quote it as it stands.