G43 and G70 Hooks
Mini J Hook Grade 70 Forged Steel 5/16"-3/8" /7-8mm, WLL 5400LBS
A forged alloy steel J hook in Grade 70, sized 5/16" to 3/8" /7-8mm, with a working load limit of 5400LBS and minimum breaking strength of 19000LBS. Designed to fit vehicle frame holes and secure loads during towing, pulling, and dragging. Not for overhead lifting. Compatible with Grade 70 or lower chain. Features a yellow chromate finish and is supplied in cartons and pallets.
- Size
- 5/16"-3/8" /7-8mm
- Working Load Limit
- 5400LBS Breaking Strength (lbs): 19000 LBS
- Material
- Alloy Steel Processing: Forged
- Finish
- Yellow chromate finish
- Packing
- Cartons + Pallets
- Catalogue Family
- G43 and G70 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 Mini J Hook Grade 70 Forged Steel 5 Gives You
- Grade 70 forged alloy steel provides high tensile strength and impact resistance for heavy-duty towing and pulling
- Yellow chromate finish resists corrosion in outdoor and wet environments
- Compact size fits into small frame holes on vehicle undercarriages for secure tie-down
- Drop-forged construction ensures uniform grain flow and consistent strength
- Designed to match the working load limit of Grade 70 or lower chain, reducing mismatch risk
- Twist-to-lock action secures the hook in place during dynamic loads
- Clear WLL and MBS stamped on the hook body for traceability and safety compliance
Application Scenarios
Where Mini J Hook Grade 70 Forged Steel 5 Is Used
- Towing and recovery of light to medium vehicles using frame rail tie-down points
- Securing cargo on trailers where space is limited and a compact hook is needed
- Mounting on unibody chassis of foreign vehicles such as Toyota and Honda
- Pulling or dragging equipment in construction and industrial settings
- Using with Grade 70 chain in temporary or mobile rigging setups
- Recovery operations where a quick, secure hook attachment is needed on vehicle frame rails
Who It Is For
Buyers This Product Is Built For
- Truck and trailer fleet operators specifying tie-down hardware for cargo securement
- Automotive recovery and towing service providers needing compact frame hooks
- Rigging distributors carrying vehicle tie-down accessories for the transport market
- Off-road and adventure vehicle builders integrating secure tie-down points
- Manufacturers of recovery kits requiring a standard, reliable J hook for vehicle use
Problems It Solves
Problems This Product Removes
- Inadequate hook size or strength when attaching to vehicle frame holes during towing
- Lack of secure fit in small undercarriage holes leading to hook slippage during pull
- Using mismatched hooks and chains where the hook’s WLL exceeds the chain’s capacity
- Corrosion damage in outdoor use due to poor surface finish on standard hooks
- Need for a compact, reliable hook that fits foreign vehicle frame rails without modification
- Buying separate hooks and chains from different suppliers with no compatibility assurance
Technical Features
Technical Features
- Drop-forged alloy steel body in Grade 70 with quenched and tempered heat treatment
- Working load limit of 5400LBS and minimum breaking strength of 19000LBS
- Size range: 5/16” to 3/8” /7-8mm for compatibility with small frame holes
- Yellow chromate finish for corrosion resistance in harsh environments
- Twist-to-lock design secures the hook in place during dynamic loading
- WLL and MBS stamped on the hook body for traceability and field verification
- Designed for use with Grade 70 or lower chain only, not for overhead lifting
Specifications
Mini J Hook Grade 70 Forged Steel 5 Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Capacity Range | 5400LBS WLL |
|---|---|
| Minimum Breaking Strength | 19000LBS |
| Material | Alloy steel Grade 70 |
| Processing | Drop forged quenched and tempered |
| Finish | Yellow chromate |
| Size Range | 5/16” to 3/8” /7-8mm |
| Weight | 0.32 kg |
| Dimensions | L 14.5 mm B 29.0 mm |
| Application | Towing pulling and dragging only |
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 Grade 70 drop forged and quenched and tempered for high strength and toughness
- Yellow chromate coating applied after forging to resist rust and environmental exposure
- No galvanizing or powder coating—chromate finish is standard for corrosion resistance
- No plastic or non-metallic components—fully metal construction for durability
Manufacturing Process
How This Product Is Made
1Raw alloy steel billets cut to size for forging
2Drop forging of the hook blank under high pressure to form the shape
3Quench and temper heat treatment to achieve Grade 70 hardness and strength
4Machining of the hook throat and pin hole to precise dimensions
5Surface treatment with yellow chromate finish
6Stamping of WLL, MBS, and grade markings on the body
7Final inspection and packing in cartons and pallets
Quality Control
Quality Control On Every Batch
- Proof load testing on production batches at the rated load
- Dimensional tolerance check against the published size table
- Breaking strength validation to confirm minimum 19000LBS MBS
- Visual inspection for forging defects cracks or surface flaws
- 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
- Custom surface finish including zinc plating or powder coating on request
- Custom sizes and assemblies built to a supplied drawing
- Carton and pallet packing configured to your warehouse or retail pack
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 forged hook without chromate finish | Yellow chromate finish improves corrosion resistance in outdoor and wet conditions |
| Galvanized hook | Chromate finish is thinner and more durable under abrasion than galvanizing |
| Screw pin hook | J hook uses a twist-to-lock action which is faster and more secure than a screw pin for repeated use |
| Overhead lifting hook | This hook is not rated for overhead lifting and should only be used for towing and pulling |
Use Guide
How To Use And Inspect Mini J Hook Grade 70 Forged Steel 5
- Match the hook’s WLL to the chain’s WLL—do not exceed 5400LBS
- Ensure the hook size fits the vehicle frame hole and chain diameter before attaching
- Twist the hook to lock it in place during dynamic loads
- Inspect the hook before each use for deformation wear or finish damage
- Do not use for overhead lifting—only for towing, pulling, and dragging
- Retire the hook if the body shows bending the finish is compromised or the marking is unreadable
Related Products
Often Ordered With This Item
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Grade 70 Bolt-On Grab Hook with Backer Plate
5/16 G70 Mini J Hook | Compact Frame J Hook
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Clevis Grab Hook with Safety Latch A330N Grade 70
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Answers
Mini J Hook Grade 70 Forged Steel 5 FAQ
Is this hook suitable for overhead lifting?
No. This Mini J Hook is designed only for towing, pulling, and dragging. It is not rated for overhead lifting.
Can I use this hook with Grade 80 chain?
No. This hook is rated for Grade 70 or lower chain. Using it with Grade 80 chain exceeds the hook’s working load limit.
What is the finish on the hook?
The standard finish is yellow chromate. Custom finishes such as zinc plating or powder coating are available on request.
What is the weight of the hook?
The hook weighs 0.32 kg. Dimensions are L 14.5 mm and B 29.0 mm.
Can you provide a Material Test Certificate?
Yes. A Material Test Certificate to EN 10204 3.1 is supplied with the order on request.
How are the hooks packed for export?
They are packed in cartons and pallets. We can configure the carton count and pallet pattern to suit your warehouse or retail pack.
Are these hooks compatible with foreign vehicle frame rails?
Yes. The Mini J Hook is designed for foreign vehicles such as Toyota and Honda, fitting into small undercarriage holes for secure tie-down
Need A Quote On Mini J Hook Grade 70 Forged Steel 5
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.