Shackles
Safety Pin Shackle, Bolt Type Lifting Chain Shackles
A D-shaped shackle with a bolt-type pin and safety cotter pin, designed for secure rigging connections in lifting and load anchoring. Made from drop-forged super carbon steel body and alloy steel bolt, heat-treated for strength. Available from 3/16" to 4" in working load limit, with WLL stamped on each unit. Standard 4:1 or 6:1 design factor, hot-dipped galvanized, powder coated, or zinc plated finish. Used across construction, maritime, and off-road recovery applications.
- Size
- From 3/16"to 4" 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 Safety Pin Shackle Gives You
- Bolt-type pin with safety cotter pin prevents accidental disengagement during dynamic lifting
- Drop-forged super carbon steel body with quench and temper heat treatment ensures high impact resistance
- Alloy steel bolt provides superior tensile strength compared to standard steel pins
- WLL stamped directly on the body for immediate field traceability and compliance
- Multiple surface finishes available to resist corrosion in marine, outdoor, and industrial environments
- Standard 4:1 or 6:1 design factor ensures predictable load performance under rated conditions
- Compact D-shape design offers a strong, space-efficient connection point for chains, slings, and cables
Application Scenarios
Where Safety Pin Shackle Is Used
- Lifting operations on construction sites where a secure, vibration-resistant connection is required
- Marine and offshore rigging where saltwater exposure demands corrosion-resistant finishes
- Off-road recovery setups using winch lines and chains where accidental pin release must be prevented
- Industrial plant maintenance where rigging hardware must withstand repeated load cycles
- Cargo securing on trailers and transport vehicles using chain and strap systems
- Steel fabrication and structural assembly where a reliable, stamped WLL connection is needed
Who It Is For
Buyers This Product Is Built For
- Construction contractors specifying secure rigging hardware for crane and hoist operations
- Marine equipment suppliers equipping vessels and offshore platforms with corrosion-resistant shackles
- Off-road recovery kit manufacturers needing bolt-type shackles with safety locking
- Industrial maintenance teams replacing worn or unsafe screw pin shackles with bolt-type alternatives
- Logistics and transport companies securing heavy loads with chain and strap systems
- Rigging distributors expanding their product range with bolt-type shackles in multiple finishes
Problems It Solves
Problems This Product Removes
- Accidental pin disengagement in dynamic lifting due to vibration or shock
- Inadequate strength or fatigue resistance in standard steel shackles under repeated loads
- Lack of traceable working load limit marking on field-used rigging hardware
- Corrosion damage in marine or outdoor environments from uncoated steel shackles
- Need for a secure, non-screwed pin connection that can be installed and removed with hand tools
- Buying shackles with inconsistent safety features from multiple suppliers instead of one source
Technical Features
Technical Features
- D-shaped body made from drop-forged super carbon steel, quenched and tempered
- Alloy steel bolt with hexagon head and safety cotter pin hole
- Safety cotter pin prevents bolt from backing out under load or vibration
- Working load limit stamped on the body for field identification
- Standard 4:1 or 6:1 design factor depending on application and load requirement
- Available in hot-dipped galvanized, powder coated, or zinc plated finish
- Sizes from 3/16” to 4” in working load limit, with dimensions and weight provided per size
Specifications
Safety Pin Shackle Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Capacity Range | 3/16" to 4" WLL |
|---|---|
| Material | Body - Super Carbon Steel, Bolt - Alloy Steel |
| Processing | Drop Forged, Quenched and Tempered |
| Design Factor | 4:1 or 6:1 |
| Surface Finish | Hot Dipped Galvanized, Powder Coated, Zinc Plated |
| WLL Marking | Stamped on body |
Materials
Materials And Finishes
- Super carbon steel body, drop forged and heat-treated for high strength and toughness
- Alloy steel bolt with high tensile strength and resistance to fatigue
- Stainless steel cotter pin option available for saltwater and corrosive environments
- Hot-dipped galvanizing for long-term corrosion protection in outdoor and marine use
- Powder coating or zinc plating for additional surface durability and visual identification
Manufacturing Process
How This Product Is Made
1Drop forging of the D-shaped body and bolt blanks
2Quench and temper heat treatment of the body and bolt for enhanced strength
3Machining of the bolt thread and pin hole in the body
4Assembly of the bolt with safety cotter pin hole alignment
5Surface finishing by hot-dip galvanizing, powder coating, or zinc plating
6Stamping of WLL and product marking on the body
7Proof load testing and final inspection before packing
Quality Control
Quality Control On Every Batch
- Proof load testing on production batches before release
- Dimensional tolerance check against published size table
- Breaking strength validation to confirm 4:1 or 6:1 design factor
- Visual inspection for surface defects, finish uniformity, and marking legibility
- 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 WLL requirements
- Private label and OEM marking available for brand-specific packaging
- Finish selection in hot-dipped galvanized, powder coated, or zinc plated
- 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 |
|---|---|
| Screw Pin Shackle | Bolt-type shackle with safety cotter pin is more secure under vibration and does not require threading, but requires a cotter pin for locking |
| Safety Pin Shackle | Bolt-type version has higher tensile strength and is easier to install with tools, but requires a separate cotter pin for locking |
| D Shackle with Screw Pin | Bolt-type offers better resistance to loosening under dynamic load but is bulkier and requires a cotter pin |
| Bow Shackle | D-shackle has a more compact profile and higher strength-to-weight ratio, but less clearance for angled attachments |
Use Guide
How To Use And Inspect Safety Pin Shackle
- Verify the stamped WLL matches the calculated load before use
- Ensure the bolt is fully seated and the safety cotter pin is properly installed
- Check that the cotter pin is not bent or damaged before each use
- Inspect the body and bolt for cracks, deformation, or wear before every lift
- Avoid side loading or twisting the shackle beyond its rated capacity
- Retire the shackle if the body shows deformation, the bolt is stripped, or the marking is unreadable
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Crosby Wide Body Shackles
G2160 Shackle Crosby Wide Body Shackles
Wide Body Shackle Crosby G-2160
Lugless Joining Shackle - Kenter Link - End Shackle -Swivel Set
Kenter Link - Joining / End Shackle -Swivel Set
Kenter Shackle - Anchor Chain Fittings
Screw Pin Chain Shackle D Type
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Answers
Safety Pin Shackle FAQ
What is the difference between a bolt-type shackle and a screw pin shackle?
A bolt-type shackle uses a removable bolt with a safety cotter pin to prevent loosening, while a screw pin shackle uses a threaded pin that can be unscrewed. The bolt-type version is more secure under vibration and does not require threading.
Can I use this shackle in marine environments?
Yes. The hot-dipped galvanized, powder coated, or zinc plated finish provides corrosion resistance suitable for marine and outdoor use.
What safety factor do these shackles have?
Standard 4:1 or 6:1 design factor, depending on the application and load requirement. The minimum breaking load is four or six times the stated safe working load.
Are Material Test Certificates available?
Yes. A Material Test Certificate to EN 10204 3.1 is supplied on request with every order.
Can I get custom tonnage stamped on the shackle?
Yes. Custom tonnage stamping is available on request, along with private label and OEM marking.
How are the shackles packed for export?
Shackles are packed in cartons or gunny bags, then palletized. We can configure carton count and pallet pattern to match your warehouse or retail requirements.
What sizes are available?
Sizes range from 3/16" to 4" in working load limit. Dimensions and weights are provided in the size table for each capacity.
Need A Quote On Safety Pin 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.