Tie Down Hardware
DOUBLE S HOOK
A double S hook in alloy steel with a forged body and a 4:1 design factor, designed for secure attachment in ratchet strap and tie-down systems. Available in 800kg (1760lbs) safe working load, it meets BS standards and is suitable for industrial, transport, and logistics applications where reliable load retention is required.
- Size
- BS:800KG/1760LBS
- Catalogue Family
- Tie Down Hardware
- 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 Double S Hook Gives You
- Double S shape provides a secure, self-locking grip on straps and chains without slipping under load
- Forged alloy steel construction resists deformation under repeated tension and shock loading
- 4:1 design factor ensures minimum breaking load is four times the safe working load
- BS standard compliance supports use in regulated transport and industrial environments
- Smooth, rounded edges reduce wear on webbing and synthetic straps during repeated use
- Compact design fits standard ratchet tie-down systems without adding bulk to the rigging setup
- Stainless steel finish option available to resist corrosion in outdoor and marine environments
Application Scenarios
Where Double S Hook Is Used
- Securing heavy machinery and industrial equipment on flatbed trailers during long-haul transport
- Tying down steel coils and fabricated metal components in port and warehouse environments
- Stabilizing cargo in logistics and freight operations where vibration and movement are constant
- Mounting on ratchet straps for temporary rigging in construction and infrastructure projects
- Use in offshore or marine logistics where corrosion resistance and load integrity are critical
Who It Is For
Buyers This Product Is Built For
- Logistics and freight operators specifying tie-down hardware for commercial transport fleets
- Manufacturers and fabricators securing steel and metal components during transit
- Port and terminal operators managing cargo stability on container and flatbed transport
- Construction site managers requiring reliable, repeatable rigging for temporary load anchoring
- Rigging distributors carrying tie-down hardware with standardized load ratings and compliance
Problems It Solves
Problems This Product Removes
- Straps slipping out of single hook ends during dynamic loading or vibration
- Load shift due to inadequate retention from poorly designed or undersized hooks
- Corrosion damage to hooks in outdoor or marine environments reducing service life
- Lack of standardization in hook design leading to inconsistent performance across suppliers
- Need for separate hardware for different strap types when a single hook must serve multiple purposes
- Inconsistent load ratings and missing traceability in low-cost imported tie-down hardware
Technical Features
Technical Features
- Double S forged alloy steel body with a 4:1 design factor
- BS standard compliance for safe working load and material performance
- Smooth, rounded edges to minimize strap wear and prevent chafing
- Stainless steel finish option for corrosion resistance in harsh environments
- Safe working load stamped on the body for traceability and field identification
- Minimum breaking load four times the safe working load as per standard design factor
- Designed for use with ratchet straps, webbing slings, and chain tie-down systems
Specifications
Double S Hook Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Capacity | 800kg / 1760lbs safe working load |
|---|---|
| Material | Forged alloy steel |
| Standard | BS |
| Surface Finish | Standard black finish or stainless steel option |
| Working Load Limit Marking | Stamped on the body |
Materials
Materials And Finishes
- Forged alloy steel body for high tensile strength and impact resistance
- Stainless steel finish option for use in corrosive environments
- Smooth, polished edges to reduce friction and strap wear
- Heat-treated steel to improve durability under repeated loading
Manufacturing Process
How This Product Is Made
1Forging of the S-shaped steel blank
2Heat treatment to improve strength and toughness
3Machining of the hook ends and attachment points
4Surface finishing including black coating or stainless steel option
5Stamping of safe working load and standard marking
6Proof load testing and inspection before packing
Quality Control
Quality Control On Every Batch
- Proof load test on production batches before release
- Dimensional tolerance check against published size data
- Breaking strength validation to confirm 4:1 design factor
- Visual inspection for surface defects and forging flaws
- Working load limit marking verified for legibility and accuracy
- Material Test Certificate to EN 10204 3.1 supplied on request
Customisation
Customisation Options
- Custom tonnage stamping on the hook body
- Private label and OEM marking available
- Surface finish options including zinc plating, powder coating, or electrophoretic black
- Custom sizes and configurations built to a supplied drawing
- Packing carton and pallet configuration tailored to buyer’s 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 |
|---|---|
| Single S hook | The double S shape provides better retention and self-locking action, reducing the risk of strap slippage under dynamic load |
| Eye hook | The double S hook allows for easier attachment and release with ratchet straps, while eye hooks require additional hardware for secure connection |
| Swivel hook | The double S hook is more compact and lighter, but lacks swivel motion which may be needed in certain rigging configurations |
| Low-cost stamped hook | Forged alloy steel offers higher strength and durability, while stamped hooks are prone to deformation under repeated stress |
Use Guide
How To Use And Inspect Double S Hook
- Always match the stamped safe working load to the calculated load, not the ratchet strap rating
- Ensure the strap is fully seated in both S-shaped loops before tightening
- Inspect the hook for deformation, cracks, or wear before each use
- Do not exceed the 800kg safe working load under any condition
- Use only with compatible ratchet straps or chain systems designed for this hook type
- Retire the hook if the marking is illegible, the body is bent, or the finish is compromised
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Answers
Double S Hook FAQ
What is the safe working load of this double S hook?
The safe working load is 800kg (1760lbs), with a minimum breaking load four times that value as per the 4:1 design factor.
Is this hook compliant with any international standards?
Yes, it meets BS standards for safe working load and material performance, and is manufactured to a 4:1 design factor.
Can I get a Material Test Certificate?
Yes, a Material Test Certificate to EN 10204 3.1 is supplied on request with each order.
What surface finishes are available?
Standard black finish is included. Custom finishes such as zinc plating, powder coating, or electrophoretic black are available upon request.
Can I have my company logo or custom marking on the hook?
Yes, private label and OEM marking are standard options, including custom tonnage stamping.
How are the hooks packed for export?
They are packed in cartons on pallets as standard. We can configure the carton count and pallet pattern to match your warehouse or retail requirements.
Is this hook suitable for use with synthetic webbing straps?
Yes, the smooth, rounded edges reduce wear on synthetic straps and prevent chafing during use
Need A Quote On Double S Hook
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.