G43 and G70 Hooks
Clevis Grab Hook Grade 70 Yellow Zinc-Plated A330
A drop-forged alloy steel clevis grab hook in Grade 70, yellow zinc-plated, designed for heavy-duty load securement in towing, transport, and recovery. It features a clevis pin connection for quick attachment and removal, with a secure grip on Grade 70 chains to prevent slippage under tension. Sizes range from 1/4" to 3/4" with working load limits from 3,150 lbs to 24,700 lbs. Used in flatbed transport, tow trucks, municipal fleets, and roadside recovery operations.
- Size
- From 1/4" to 3/4"
- Material
- Drop-Forged Alloy Steel
- Finish
- Yellow Zinc-Plated
- Packing
- Cartons or Gunny Bags and then on 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 Clevis Grab Hook Grade 70 Zinc Plated A330 Gives You
- Yellow zinc-plated finish resists rust and wear in outdoor and wet environments
- Drop-forged alloy steel body with quench and temper treatment ensures high strength and impact resistance
- Clevis pin design allows fast, tool-free installation and removal of chains
- Secure grip on Grade 70 chains prevents slippage during dynamic loading
- Standard 4:1 design factor ensures consistent safety margins across all sizes
- Compatible with 5/16”, 3/8”, and 1/2” Grade 70 chains commonly used in transport and recovery
- Lightweight yet durable construction reduces crew fatigue during repeated use
Application Scenarios
Where Clevis Grab Hook Grade 70 Zinc Plated A330 Is Used
- Flatbed trailer operations securing heavy machinery and industrial equipment with Grade 70 chains
- Tow truck and recovery vehicle use for pulling vehicles with chain-based tie-downs
- Municipal fleet maintenance for securing tools, equipment, and roadside repair gear
- Roadside assistance services where quick chain attachment and release are required
- Equipment hauling and cargo control systems on utility and transport trailers
Who It Is For
Buyers This Product Is Built For
- Towing and recovery fleet operators specifying reliable chain attachment hardware
- Flatbed trailer manufacturers integrating securement components into their designs
- Municipal and utility fleet managers sourcing durable, corrosion-resistant hardware
- Rigging distributors carrying Grade 70 chain accessories for transport and recovery
- Equipment haulers needing fast, secure chain connections with minimal setup time
Problems It Solves
Problems This Product Removes
- Chain slippage from loose or poorly gripping hooks during transport and towing
- Corrosion damage in outdoor environments due to untreated steel surfaces
- Slow chain attachment and removal with screw-pin or non-clevis designs
- Inconsistent safety margins when using hooks not rated to a standard design factor
- Need to source chain hooks and chain from separate suppliers, increasing procurement complexity
- Lack of traceability and test documentation for critical load securement components
Technical Features
Technical Features
- Drop-forged alloy steel body with quench and temper heat treatment
- Clevis-style pin connection with a secure bolt and nut for positive retention
- Yellow zinc-plated surface finish for corrosion resistance in harsh environments
- Standard 4:1 design factor with minimum breaking load four times the safe working load
- Working load limit stamped on the body for traceability and field verification
- Designed specifically for Grade 70 chain use with compatible pin and eye dimensions
- Clear size and WLL markings for quick identification in the field
Specifications
Clevis Grab Hook Grade 70 Zinc Plated A330 Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Material | Drop forged alloy steel quenched and tempered |
|---|---|
| Grade | Grade 70 |
| Design Factor | 4:1 minimum breaking load to safe working load |
| Surface Finish | Yellow zinc-plated |
| Size Range | 1/4" to 3/4" (diameter) |
| Pin Type | Clevis pin with bolt and nut |
| Chain Compatibility | 5/16", 3/8", 1/2" Grade 70 chains |
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
- Drop-forged alloy steel body for high tensile strength and fatigue resistance
- Quench and temper heat treatment to improve hardness and toughness
- Yellow zinc-plated coating for enhanced corrosion protection in outdoor use
- Steel pin and nut with matching strength rating to the body
- Stainless steel cotter pin option available on request for saltwater environments
Manufacturing Process
How This Product Is Made
1Drop forging of the hook body and pin blanks
2Quench and temper heat treatment to achieve Grade 70 mechanical properties
3Machining of the eye, pin hole, and thread for precise fit
4Assembly of the clevis pin with bolt and nut
5Surface treatment with yellow zinc plating
6Stamping of working load limit and grade marking
7Proof load testing and dimensional inspection before packing
Quality Control
Quality Control On Every Batch
- Proof load test on production batches before release
- Dimensional tolerance check against published size table
- Breaking strength validation to confirm 4:1 design factor
- Visual inspection for surface defects and plating uniformity
- 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 for distributors and fleet brands
- Custom surface finish including zinc plating, powder coating, or electrophoretic black
- Custom packing configuration in cartons or gunny bags on pallets
- Assembly of hook with optional stainless steel cotter pin for saltwater service
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 |
|---|---|
| Screw Pin Hook | The clevis pin with bolt and nut does not back off under vibration, unlike a screw pin that requires regular checking |
| Open-End Hook | The closed clevis design prevents chain disengagement during dynamic loading, unlike open-end hooks that can slip |
| Grade 43 Hook | Grade 70 offers higher strength and breaking load, suitable for heavier loads and repeated use |
| Unplated Steel Hook | The yellow zinc-plated finish resists rust and wear in outdoor and wet conditions, extending service life |
Use Guide
How To Use And Inspect Clevis Grab Hook Grade 70 Zinc Plated A330
- Match the hook size and WLL to the chain diameter and load requirements
- Ensure the chain fits securely through the hook eye and does not bind
- Tighten the bolt and nut fully and install a cotter pin to prevent loosening
- Inspect the hook for deformation, wear, or plating damage before each use
- Do not use for overhead lifting—only for load securement, towing, and transport
- Retire the hook if the WLL marking is illegible or the body shows permanent deformation
Related Products
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Answers
Clevis Grab Hook Grade 70 Zinc Plated A330 FAQ
Can this hook be used for overhead lifting?
No. Grade 70 clevis grab hooks are not rated for lifting. They are designed for load securement, towing, and transport only.
Is this hook compatible with all chain types?
It is compatible with 5/16", 3/8", and 1/2" Grade 70 chains. Not suitable for Grade 43 or other chain grades without verification.
What safety factor does this hook carry?
A standard 4:1 design factor, so the minimum breaking load is four times the stated safe working load.
What certificates come with the order?
A Material Test Certificate to EN 10204 3.1 is supplied on request. Every batch is proof load tested with dimensional and breaking strength checks recorded.
Can you stamp our own tonnage marking and brand?
Yes. Custom tonnage stamping, private label marking, and OEM packing are standard options, and the finish can be zinc plated, powder coated, or electrophoretic black.
How are they packed for export?
Cartons or gunny bags on pallets as standard. We can configure packing to suit your warehouse or retail pack. Goods can be held in our Qingdao warehouse free for two months while you consolidate shipments.
Which sizes are available?
Sizes range from 1/4" to 3/4" with corresponding working load limits from 3,150 lbs to 24,700 lbs. The full size table is available in the specifications section.
Need A Quote On Clevis Grab Hook Grade 70 Zinc Plated A330
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.