Shackles
D Shackle, Screw Pin Chain Shackles G210
A drop-forged D shackle with a screw pin made from alloy steel, designed for chain and rigging connections in lifting and towing applications. The body is constructed from super carbon steel, heat-treated and quenched for strength, with a standard 4:1 design factor and optional 6:1 for high-duty use. Available from 3/16" to 2-1/2" nominal size with working load limits stamped on each unit. The screw pin is secured with a safety nut and cotter pin to prevent loosening under vibration. Standard finishes include hot-d
- Size
- From 3/16"to 2-1/2" WLL ,Size embossed on each shackle
- Material
- Body-Super Carbon Steel. Screw Pin-Alloy Steel
- Finish
- Body-Hot Dipped Galvanized / Powder Coated / Zinc Plated
- Packing
- Cartons or Gunny Bags and then on Pallets
- Catalogue Family
- Shackles
- 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 D Shackle Gives You
- Drop-forged super carbon steel body with quench and temper treatment provides high impact and tensile strength
- Screw pin made from alloy steel with safety nut and cotter pin prevents loosening under dynamic load and vibration
- Standard 4:1 design factor ensures minimum breaking load is four times the safe working load
- Optional 6:1 design factor available for high-duty lifting and critical applications
- Working load limit stamped directly on the body for traceability and field identification
- Hot-dipped galvanized, powder coated, or zinc plated finish resists corrosion in marine and outdoor environments
- Compact D-shaped design allows for secure connection between chains, slings, and lifting hardware
Application Scenarios
Where D Shackle Is Used
- Marine and offshore rigging where chain links must be connected with a secure, corrosion-resistant fitting
- Construction site lifting operations using chain hoists and overhead cranes with frequent load changes
- Off-road recovery setups using chain and D shackles to anchor winch lines to vehicle frames or trees
- Industrial maintenance where chains are used to suspend or move heavy machinery components
- Towing and transport operations requiring durable chain connections between trailers and loads
- Oil and gas field service where equipment is rigged with chain and must withstand harsh conditions
Who It Is For
Buyers This Product Is Built For
- Marine and offshore contractors sourcing chain connection hardware with corrosion resistance
- Construction and crane operators needing reliable D shackles for chain rigging systems
- Off-road recovery kit manufacturers specifying secure, stamped shackles for winch applications
- Industrial maintenance teams replacing worn or damaged shackles in heavy-duty lifting setups
- Logistics and transport fleets requiring durable chain connectors for trailer and cargo securing
Problems It Solves
Problems This Product Removes
- Chain links failing at connection points due to weak or poorly secured shackles under dynamic load
- Screw pins backing off during vibration or repeated loading in mobile or off-road applications
- Lack of traceability in rigging hardware due to missing or illegible working load markings
- Corrosion damage on shackles used in saltwater or outdoor environments reducing service life
- Buying shackles and pins from separate suppliers, increasing procurement complexity and lead time
- Inconsistent safety factors across different shackles leading to overloading and equipment failure
Technical Features
Technical Features
- Drop-forged body in super carbon steel quenched and tempered for strength and toughness
- Screw pin made from alloy steel with safety nut and cotter pin to prevent loosening
- Standard 4:1 design factor with optional 6:1 for high-duty applications
- Working load limit stamped directly on the body for field traceability
- Hot-dipped galvanized, powder coated, or zinc plated finish for corrosion resistance
- Nominal size from 3/16” to 2-1/2” with dimensions A, B, C, E, G, K, and weight provided
- Designed for use with chain, slings, and other rigging components in lifting and towing
Specifications
D Shackle Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Capacity Range | 0.11T to 71.75T safe working load |
|---|---|
| Material | Body - Super carbon steel, Pin - Alloy steel |
| Design Factor | 4:1 standard, 6:1 optional |
| Processing | Drop forged quenched and tempered |
| Surface Finish | Hot-dipped galvanized powder coated or zinc plated |
| Size Range | 3/16” to 2-1/2” nominal size |
| WLL Marking | Stamped on body for traceability |
| Pin Type | Screw pin with safety nut and cotter pin |
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
- Super carbon steel body drop forged and heat-treated for high tensile strength
- Alloy steel screw pin for enhanced fatigue and tensile resistance
- Stainless steel cotter pin to prevent seizing in salt or humid environments
- Hot-dipped galvanizing layer for long-term corrosion protection
- Powder coat or zinc plating applied over the forged body for additional weather resistance
Manufacturing Process
How This Product Is Made
1Drop forging of the D-shaped body and screw pin blanks
2Quench and temper heat treatment of the body and pin
3Machining of the screw thread and pin bore
4Assembly of the screw pin with safety nut and cotter pin
5Surface finishing by hot-dip galvanizing powder coating or zinc plating
6Stamping of working load limit and size on the body
7Proof load testing and final inspection before packing
Quality Control
Quality Control On Every Batch
- Proof load test conducted on each production batch before release
- Dimensional tolerance check against published size table
- Breaking strength validation to confirm 4:1 or 6:1 design factor
- Free rotation and thread engagement check on the screw pin
- 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 body for specific load requirements
- Private label and OEM marking available for brand-specific packaging
- Finish to order in hot-dipped galvanized powder coated or zinc plated
- Custom sizes and pin configurations built to a supplied drawing
- Carton and pallet packing configured for 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 |
|---|---|
| Rigid shackle | The screw pin allows for easier connection and disconnection but requires a safety nut and cotter pin to prevent loosening |
| Bolt pin shackle | The screw pin is more compact and easier to install with hand tools but may not hold as securely under high vibration without a cotter pin |
| Welded shackle | Drop-forged construction offers higher strength and impact resistance than welded types, which can fail at the weld point under dynamic load |
| Screw pin with no cotter pin | The addition of a cotter pin prevents the screw pin from backing out under continuous vibration, which is critical in mobile or lifting applications |
Use Guide
How To Use And Inspect D Shackle
- Verify the stamped working load limit matches the calculated load, not the equipment rating
- Ensure the screw pin is fully tightened and the safety nut is secured with a cotter pin before use
- Inspect the shackle before each use for deformation, thread wear, or corrosion
- Avoid side loading the shackle; keep the load aligned with the pin axis
- Replace the shackle if the body shows bending, the pin is stripped, or the marking is unreadable
- Do not reuse a shackle after a major overload or impact event
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Answers
D Shackle FAQ
What is the design factor for these D shackles?
Standard 4:1 design factor. An optional 6:1 design factor is available for high-duty applications.
Can the working load limit be customized and stamped?
Yes. Custom tonnage stamping is available on the body for specific load requirements.
What finishes are available?
Standard finishes include hot-dipped galvanized, powder coated, and zinc plated. Custom finishes are available on request.
Are Material Test Certificates provided?
Yes. A Material Test Certificate to EN 10204 3.1 is supplied on request with each order.
Can I get these with a private label?
Yes. Private label and OEM marking are standard options, and packaging can be configured to your brand.
How are they packed for export?
Cartons or gunny bags on pallets. We can configure carton count and pallet pattern to suit your warehouse or retail pack.
What sizes are available?
Sizes range from 3/16” to 2-1/2” nominal size, with working load limits from 0.11T to 71.75T.
Need A Quote On D Shackle
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.